{"id":6053,"date":"2022-03-15T23:56:19","date_gmt":"2022-03-15T15:56:46","guid":{"rendered":"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental_algebra\/more_about_graphs_of_functions\/understand_transformation_of_functions-2\/"},"modified":"2022-07-02T03:47:41","modified_gmt":"2022-07-01T19:47:41","slug":"understand_equation_of_a_straight_line","status":"publish","type":"page","link":"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental-shape_n_space\/equations_of_straight_lines\/understand_equation_of_a_straight_line\/","title":{"rendered":"\u7406\u89e3\u76f4\u7dda\u65b9\u7a0b"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"6053\" class=\"elementor elementor-6053\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6e6d9785 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6e6d9785\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-41dc1ba6\" data-id=\"41dc1ba6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-aa1ecbd elementor-widget elementor-widget-text-editor\" data-id=\"aa1ecbd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>10.1\u00a0\u7406\u89e3\u76f4\u7dda\u65b9\u7a0b (Understand the Equation of a Straight Line)<\/h2><p>\u53ef\u80fd\u4f60\u6703\u8a71: \u300c\u4e00\u689d\u76f4\u7dda\u7121\u8ad6\u4f60\u9ede\u756b\u4f62\u90fd\u4fc2\u4e00\u689d\u76f4\u7dda\uff0c\u90fd\u5514\u77e5\u6709\u54a9\u8981\u53bb\u7406\u89e3??\u300d<\/p><p>\u5176\u5be6\u8981\u4f60 \u7406\u89e3\u76f4\u7dda\u65b9\u7a0b \u5373\u4fc2\u8981\u4f60\u7747\u5f97\u8a08\u689d\u76f4\u7dda\u5605\u65b9\u7a0b\u51fa\u569f\u3002<\/p><h3>10.1.1\u00a0 \u6c42\u76f4\u7dda\u65b9\u7a0b\u7684\u65b9\u6cd5 (Methods of Finding the Equation of a Straight Line)<\/h3><p>\u6839\u64da\u4e2d\u5b78\u6587\u6191\u6578\u5b78\u5605\u8ab2\u7a0b\uff0c\u5927\u5bb6\u8981\u8b58\u5f97\u55ba\u77e5\u9053\u4ee5\u4e0b\u5605\u689d\u4ef6\u5605\u60c5\u6cc1\u4e0b\u6c42\u76f4\u7dda\u5605\u65b9\u7a0b\uff1a<\/p><ul><li>\u76f4\u7dda\u4e0a\u4efb\u610f\u5169\u9ede\u7684\u5750\u6a19<\/li><li>\u76f4\u7dda\u7684\u659c\u7387\u53ca\u8a72\u76f4\u7dda\u4e0a\u4e00\u9ede\u7684\u5750\u6a19<\/li><li>\u76f4\u7dda\u7684\u659c\u7387\u53ca\u5176y\u622a\u8ddd<\/li><\/ul><p>\u4f46\u7121\u8ad6\u4fc2\u8a73\u60c5\u6cc1\u90fd\u597d\uff0c\u53ea\u8981\u984c\u76ee\u8981\u6211\u5730\u53bb\u6c42\u4e00\u689d\u76f4\u7dda\u5605\u65b9\u7a0b\uff0c\u6211\u54cb\u90fd\u8981\u5148\u6435\u5230\u4ee5\u4e0b\u5169\u6a23\u5622\uff1a<\/p><ul><li>\u689d\u76f4\u7dda\u5605\u659c\u7387\u3000 \uff08\u7576\u8a08\u5230\u7b49\u65bcm\uff09<\/li><li>\u76f4\u7dda\u4e0a\u5176\u4e2d\u4e00\u9ede\u5605\u5750\u6a19 \uff08\u7576\u55f0\u9ede\u4fc2 (x<sub>1<\/sub> , y<sub>1<\/sub>)\uff09<\/li><\/ul><p>\u6435\u5230\u201c\u76f4\u7dda\u5605\u659c\u7387\u201d\u540c\u201c\u76f4\u7dda\u4e0a\u5176\u4e2d\u4e00\u9ede\u5605\u5750\u6a19\u201d\u4e4b\u5f8c\uff0c\u689d\u76f4\u7dda\u5605\u65b9\u7a0b\u5c31\u6703\u4fc2\uff1a<\/p><p style=\"padding-left: 40px;\">\\(\\dfrac{y-y_1}{x-x_1} = m\\)<\/p><ul><li>\u7576\u7136\uff0c\u8003\u8a66\u5605\u6642\u5019\u591a\u6578m\u540c(x<sub>1<\/sub> , y<sub>1<\/sub>)\u6703\u4fc2\u5be6\u6578\uff0c\u6240\u4ee5\u6211\u54cb\u53ef\u4ee5\u5c07\u689d\u65b9\u7a0b\u5316\u7c21\u3002<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fbd319c elementor-widget elementor-widget-accordion\" data-id=\"fbd319c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2641\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2641\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">\u5df2\u77e5\u4e00\u76f4\u7dda\u7684\u659c\u7387\u70ba -1\uff0c\u4e14\u901a\u904e(1,3)\u3002\u6c42\u8a72\u76f4\u7dda\u7684\u65b9\u7a0b\u3002<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2641\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2641\"><p style=\"padding-left: 40px;\">\\(\\begin{align}<br \/>\\dfrac{y-3}{x-1} &amp;= -1 \\\\<br \/>y-3 &amp;=-x+1\\\\<br \/>x+y-2 &amp;=0<br \/>\\end{align}\\)<\/p><p>\u7b54: \u8a72\u76f4\u7dda\u7684\u65b9\u7a0b\u70ba x + y &#8211; 2 = 0<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-df62a2c elementor-widget elementor-widget-text-editor\" data-id=\"df62a2c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>10.1.2\u00a0 \u6c42\u76f4\u7dda\u659c\u7387\u7684\u65b9\u6cd5<\/h3><p>\u505a\u201c\u6c42\u76f4\u7dda\u65b9\u7a0b\u5605\u984c\u76ee\u201d\u6642\u6700\u91cd\u8981\u5605\u4e00\u6b65\u53ef\u4ee5\u8a71\u4fc2\u201c\u8a08\u76f4\u7dda\u5605\u659c\u7387\u201d\u3002<\/p><p>\u6c42\u76f4\u7dda\u659c\u7387\u5605\u65b9\u6cd5\u57fa\u672c\u4e0a\u6709\u4e94\u500b\uff1a<\/p><ul><li>\u5229\u7528\u5169\u9ede\u5df2\u77e5\u9ede\u5605\u5750\u6a19\uff0c\u4ee3\u5165\u516c\u5f0f \u659c\u7387 \\(m = \\tfrac{y_2-y_1}{x_2-x_1}\\)<\/li><li>\u5229\u7528\u201c\u5982\u5169\u689d\u7dda\u5e73\u884c\uff0c\u5247\u5b83\u5011\u7684\u659c\u7387\u76f8\u7b49\u201d\uff0c\u5373 m<sub>1<\/sub> = m<sub>2<\/sub><\/li><li>\u5229\u7528\u201c\u5982\u5169\u689d\u7dda\u4e92\u76f8\u5782\u76f4\uff0c\u5247 \\(m_1 \\times m_2=-1\\)\u201d<\/li><li>\u5229\u7528\u659c\u7387 \\(m=tan\\theta\\)<br \/>\uff08\u5176\u4e2d\u03b8\u70ba\u201c\u7531x-\u8ef8\u958b\u59cb\u4ee5\u9006\u6642\u9418\u65b9\u5411\u5ea6\u8d77\u81f3\u76f4\u7dda\u7684\u593e\u89d2\u201d\uff09<ul><li>\u4f8b\u5b50\uff1a\u4e0b\u5716\u4e2d\u76f4\u7dda\u7684\u659c\u7387 = tan135<sup>o<\/sup> = -1<br \/><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-6080 size-medium alignnone\" src=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/slope_of_straight_line-300x274.webp\" alt=\"\u76f4\u7dda\u7684\u659c\u7387\" width=\"300\" height=\"274\" srcset=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/slope_of_straight_line-300x274.webp 300w, https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/slope_of_straight_line-150x137.webp 150w, https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/slope_of_straight_line.webp 397w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/li><\/ul><\/li><li>\u628a\u76f4\u7dda\u5df2\u77e5\u7684\u65b9\u7a0b\u6539\u5beb\u6210 y = mx + c \u7684\u5f62\u5f0f (\u5373\u505a\u4e00\u6b21\u4e3b\u9805\u8b8a\u63db)\u3002<ul><li>\u76f4\u7dda\u7684\u659c\u7387 = m (\u5373\u53f3\u908ax\u9805\u7684\u7cfb\u6578)<\/li><\/ul><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86b177e elementor-widget elementor-widget-text-editor\" data-id=\"86b177e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3>10.1.3 \u7531\u76f4\u7dda\u65b9\u7a0b\u63cf\u8ff0\u76f4\u7dda\u7684\u7279\u5fb5 (Describing the Features of a Straight Line from its Equation)<\/h3><p>\u5e0c\u671b\u569f\u5230\u4f9d\u5ea6\uff0c\u5927\u5bb6\u5df2\u7d93\u63a5\u53d7\u5230\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p><ul><li>\u76f4\u7dda\u65b9\u7a0b\u5605\u5f62\u5f0f\u4fc2 ax + by + c = 0 \uff08\u7576\u4e2da,b\u53cac\u70ba\u6578\u5b57\uff09\u3002<\/li><li>\u00a0\u8981\u5b9a\u51fa\u4e00\u689d\u76f4\u7dda\uff0c\u6211\u54cb\u8981\u5b9a\u51fa\u76f4\u7dda\u5605\u659c\u7387\u540c\u76f4\u7dda\u901a\u904e\u5605\u5176\u4e2d\u4e00\u9ede\u3002<\/li><li>\u4e00\u689d\u76f4\u7dda\u6bd4\u8f03\u7279\u5225\u5605\u9ede\u4fc2x-\u8ef8\u540cy-\u8ef8\u4e0a\u55f0\u5169\u9ede\uff08\u5373x-\u8ef8\u622a\u9ede\u540cy-\u8ef8\u622a\u9ede\uff09\u3002<\/li><\/ul><p>\u7576\u6211\u54cb\u8981\u7531\u4e00\u689d\u76f4\u7dda\u65b9\u7a0b\u569f\u63cf\u8ff0\u4e00\u689d\u76f4\u7dda\u5605\u7279\u5fb5\u5605\u6642\u5019\uff0c\u6211\u54cb\u5c31\u4e00\u5b9a\u5148\u8981\u505a\u4ee5\u4e0b\u5605\u5622\uff1a<\/p><ul><li>\u5c07\u76f4\u7dda\u5605\u65b9\u7a0b\u7531ax + by + c = 0\u8b8a\u6210 y = mx + c\u3002<ul><li>\u7559\u610f\u5169\u689d\u5f0f\u5165\u9762\u5605c\u53ea\u4fc2\u7b26\u865f\u76f8\u540c\uff0c\u4f62\u54cb\u5605\u503c\u4e26\u5514\u76f8\u7b49\uff01<\/li><\/ul><\/li><\/ul><p>\u6709\u5497y = mx + c\u689d\u5f0f\uff0c\u6211\u54cb\u8981\u77e5\u9053\u689d\u76f4\u7dda\u5605\u201c\u659c\u7387\u201d\u3001\u201cx-\u8ef8\u622a\u8ddd\u201c\u540c\u201cy-\u8ef8\u622a\u8ddd\u201d\u53ef\u4ee5\u8a71\u4fc2\u6613\u5982\u53cd\u638c\u3002<\/p><ul><li>m\u5176\u5be6\u4fc2\u6211\u54cb\u901a\u5e38\u7528\u569f\u4ee3\u8868\u659c\u7387\u5605\u7b26\u865f\uff0c\u65e2\u7136\u689d\u5f0f\u90fd\u53eb\u201cy = mx + c\u201d\uff0c\u6240\u4ee5\u597d\u6613\u8a18\uff1a<ul><li>\u76f4\u7dda\u659c\u7387 = m\u3002<\/li><\/ul><\/li><li>y-\u8ef8\u622a\u9ede\u5605\u7279\u9ede\u4fc2\u201cx-\u5750\u6a19 = 0\u201d\u3002\u4ee3x=0\u5165\u689d\u5f0f\u5ea6\u6211\u54cb\u6703\u8a08\u5230 \u201cy = c\u201d\u3002\u6240\u4ee5\uff1a<ul><li>y-\u8ef8\u622a\u8ddd = c \uff08\u5373y-\u8ef8\u622a\u9ede = (0, c)\uff09<\/li><\/ul><\/li><li>x-\u8ef8\u622a\u9ede\u5605\u7279\u9ede\u4fc2\u201cy-\u5750\u6a19 = 0\u201d\u3002\u4ee3y=0\u5165\u689d\u5f0f\u5ea6\u6211\u54cb\u6703\u8a08\u5230 \u201cx = -c\/m\u201d\u3002\u6240\u4ee5\uff1a<ul><li>x-\u8ef8\u622a\u8ddd = -c\/m \uff08\u5373x-\u8ef8\u622a\u9ede = (-c\/m, 0)\uff09<\/li><\/ul><\/li><\/ul><p>\u53e6\u5916\u4e00\u6a23\u8981\u8b58\u5605\u5c31\u4fc2\u8981\u77e5\u9053\u9ede\u6e2c\u8a66\u4e00\u9ede\u4fc2\u5514\u4fc2\u55ba\u689d\u76f4\u7dda\u4e0a\u9762\u3002<\/p><ul><li>\u5176\u5be6\u65b9\u6cd5\u5187\u54a9\u7279\u5225\u3002\u7576\u6211\u54cb\u8981\u8a66\u5413\u9ede (3, 5) \u4fc2\u5514\u4fc2\u55ba\u689d\u76f4\u7dda\u4e0a\u9762\u3002<ul><li>\u6211\u54cb\u53ea\u8981\u4ee3x=3\u5165\u689d\u76f4\u7dda\u5605\u65b9\u7a0b\u5ea6\uff0c\u7747\u5413\u8a08\u5230\u5605y-\u503c\u4fc2\u5514\u4fc25\u5c31\u53ef\u4ee5\u3002<ul><li>\u7576\u7136\uff0c\u5982\u679c\u8a08\u5230\u5605y-\u503c\u4fc2\u7b49\u65bc5\uff0c\u5481(3, 5)\u5c31\u4fc2\u55ba\u689d\u76f4\u7dda\u4e0a\u9762\u3002<\/li><\/ul><\/li><li>\u4ee5\u4e0a\u5605\u65b9\u6cd5\u6839\u672c\u5c31\u4fc2\u7528\u569f\u6e2c\u8a66\u201c\u4e00\u9ede\u4fc2\u5514\u4fc2\u55ba\u4e00\u500b\u5716\u50cfy=f(x)\u4e0a\u201d\u5605\u65b9\u6cd5\u3002<\/li><\/ul><\/li><li>\u53e6\u4e00\u500b\u65b9\u6cd5\u5c31\u4fc2\u628a\u8981\u6e2c\u8a66\u5605\u9ede\u5605 x\u3001 y\u5750\u6a19\u4ee3\u5165\u65b9\u7a0b, \u7747\u5413\u5de6\u908a LHS (left hand side) \u662f\u5426\u8207\u7b49\u540c\u65bcRHS\u3002\u5982\u7b49\u540c\uff0c\u5373\u9ede\u5728\u76f4\u7dda\u4e0a<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dc10b14 elementor-widget elementor-widget-accordion\" data-id=\"dc10b14\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-2301\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2301\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-left\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><svg class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><svg class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">\u4f8b\u5b50\u89e3\u8aaa\uff1a\t\u5148\u756b\u51fa\u76f4\u7dda 3y \u2013 2x = 6<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-2301\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2301\"><table style=\"width: 200px; border: 1px solid black;\">\n<tbody>\n<tr>\n<td width=\"50\">x<\/td>\n<td>0<\/td>\n<td>3<\/td>\n<td>6<\/td>\n<\/tr>\n<tr>\n<td>y<\/td>\n<td>2<\/td>\n<td>4<\/td>\n<td>6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<img decoding=\"async\" class=\"alignnone wp-image-6081 size-medium\" src=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/straight_line_graph-300x228.webp\" alt=\"\u76f4\u7dda 3y \u2013 2x = 6\" width=\"300\" height=\"228\" srcset=\"https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/straight_line_graph-300x228.webp 300w, https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/straight_line_graph-150x114.webp 150w, https:\/\/www.study-together.com\/edu\/wp-content\/uploads\/2022\/03\/straight_line_graph.webp 389w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\n\n\u5c07\u201c3y \u2013 2x = 6\u201d\u6539\u5beb\u6210 y = mx + c \u7684\u683c\u5f0f\uff1a\n\\(y = \\tfrac{2}{3}x + 2\\)\n<ol>\n \t<li>\u76f4\u7dda\u659c\u7387 = m = 2\/3\n\u5f9e\u53f3\u5716\u4e2d\uff0c\u5927\u5bb6\u8981\u7559\u610f\u6b63\u5605\u659c\u7387\u4fc2\u201c\u659c\u5411\u908a\u4e00\u9762\u201d\uff08\u7531\u5de6\u4e0b\u89d2\u5411\u53f3\u4e0a\u89d2\u8d70\uff09\uff1b\u8ca0\u5605\u659c\u7387\u5c31\u6703\u201c\u659c\u5411\u53e6\u4e00\u9762\u201d \uff08\u7531\u5de6\u4e0a\u89d2\u5411\u53f3\u4e0b\u89d2\u8d70\uff09\u3002<\/li>\n \t<li>y-\u8ef8\u622a\u8ddd = c = 2<\/li>\n \t<li>x-\u8ef8\u622a\u8ddd = -c\/m = -2\/(2\/3) = -3 \uff08\u9019\u8207\u5f9e\u5716\u4e2d\u6240\u7747\u5230\u5605\u4fc2\u4e00\u6a23\uff09<\/li>\n<\/ol>\n\u5982\u8981\u5224\u65b7(3, 6)\u662f\u5426\u5728\u76f4\u7dda\u4e0a\u9762:\n<ul>\n \t<li>\u5148\u4ee3x=3\u5165\u689d\u5f0f\u540c\uff0c\u6211\u54cb\u6703\u8a08\u5230 y = 4\u3002\n<ul>\n \t<li>\u6240\u4ee5\u9ede(3,6)\u5514\u4fc2\u55ba\u689d\u7dda\u4e0a\u9762\u3002 \uff08\u9019\u8207\u5f9e\u5716\u4e2d\u6240\u7747\u5230\u5605\u4fc2\u4e00\u6a23\uff09<\/li>\n<\/ul>\n<\/li>\n \t<li>\u7576\u7136\u53e6\u4e00\u65b9\u6cd5\u662f\u628a x=3, y=6\u4ee3\u5165\u539f\u65b9\u7a0b 3\u535c- 2= 6\uff0c\n<ul>\n \t<li>LHS = 3(3) &#8211; 2(6) = 9 &#8211; 12 = -3 \u2260 RHS\n\u6240\u4ee5(3, 6)\u4e0d\u5728\u76f4\u7dda\u4e0a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-490866a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"490866a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-0379c0c\" data-id=\"0379c0c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eed70b4 elementor-widget elementor-widget-text-editor\" data-id=\"eed70b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><i class=\"far fa-arrow-alt-circle-left\" aria-hidden=\"true\"><\/i>\u00a0<a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental-shape_n_space\/equations_of_straight_lines\/\">\u76f4\u7dda\u65b9\u7a0b<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-c578045\" data-id=\"c578045\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-43bf54d\" data-id=\"43bf54d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-75c0930 elementor-widget elementor-widget-text-editor\" data-id=\"75c0930\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: right;\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental-shape_n_space\/equations_of_straight_lines\/understand_possible_intersection_of_two_straight_lines\/\">\u5169\u76f4\u7dda\u76f8\u4ea4\u7684\u53ef\u80fd\u60c5\u6cc1<\/a>\u00a0<i class=\"far fa-arrow-alt-circle-right\" aria-hidden=\"true\"><\/i><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-4bfd21bc\" data-id=\"4bfd21bc\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-20775dbc elementor-widget elementor-widget-sidebar\" data-id=\"20775dbc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"sidebar.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"sidebar-box widget-oceanwp-custom-menu custom-menu-widget clr\"><style type=\"text\/css\">.ocean_custom_menu-5 > ul > li > a, .custom-menu-widget .ocean_custom_menu-5 .dropdown-menu .sub-menu li a.menu-link{font-size:16px;line-height:17px;}.custom-menu-widget .ocean_custom_menu-5.oceanwp-custom-menu > ul.click-menu .open-this{font-size:16px;}<\/style><h4 class=\"widget-title\">DSE\u6578\u5b78 &#8211; \u5fc5\u4fee\u90e8\u5206\u3010\u76ee\u9304\u3011<\/h4><div class=\"oceanwp-custom-menu clr ocean_custom_menu-5 left dropdown-hover\"><ul id=\"menu-dsemaths_core\" class=\"dropdown-menu sf-menu\"><li  id=\"menu-item-1744\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-1744\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/course-analysis\/\" class=\"menu-link\">\u8ab2\u7a0b\u5206\u6790 (Core)<\/a><\/li>\n<li  id=\"menu-item-1745\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children dropdown menu-item-1745\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/\" class=\"menu-link\">\u5514\u597d\u4ee5\u70ba\u5514\u99db\u8003 &#8211; \u76ee\u9304 <span class=\"nav-arrow fa fa-angle-down\"><\/span><\/a>\n<ul class=\"sub-menu\">\n\t<li  id=\"menu-item-4067\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4067\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/solving-equation\/\" class=\"menu-link\">1. \u89e3\u65b9\u7a0b<\/a><\/li>\n\t<li  id=\"menu-item-4068\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4068\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/polynomials\/\" class=\"menu-link\">2. \u591a\u9805\u5f0f<\/a><\/li>\n\t<li  id=\"menu-item-4069\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4069\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/laws-of-indices\/\" class=\"menu-link\">3. \u6307\u6578\u5b9a\u5f8b<\/a><\/li>\n\t<li  id=\"menu-item-4070\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4070\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/factorization\/\" class=\"menu-link\">4. \u56e0\u5f0f\u5206\u89e3<\/a><\/li>\n\t<li  id=\"menu-item-4071\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4071\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/formulae\/\" class=\"menu-link\">5. \u516c\u5f0f<\/a><\/li>\n\t<li  id=\"menu-item-4072\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4072\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/percentage\/\" class=\"menu-link\">6. \u767e\u5206\u6cd5<\/a><\/li>\n\t<li  id=\"menu-item-4073\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4073\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/rate-and-ratio\/\" class=\"menu-link\">7. \u7387\u53ca\u6bd4<\/a><\/li>\n\t<li  id=\"menu-item-4074\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4074\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/functions\/\" class=\"menu-link\">8. \u51fd\u6578<\/a><\/li>\n\t<li  id=\"menu-item-4075\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4075\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/estimation\/\" class=\"menu-link\">9. \u4f30\u7b97<\/a><\/li>\n\t<li  id=\"menu-item-4076\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4076\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/inequalities\/\" class=\"menu-link\">10. \u4e0d\u7b49\u5f0f<\/a><\/li>\n\t<li  id=\"menu-item-4077\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4077\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/coordinates\/\" class=\"menu-link\">11. \u5750\u6a19<\/a><\/li>\n\t<li  id=\"menu-item-4079\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4079\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/geometry\/\" class=\"menu-link\">12. \u6f14\u7e79\u63a8\u7406\u5e7e\u4f55<\/a><\/li>\n\t<li  id=\"menu-item-4080\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4080\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/trigonometry\/\" class=\"menu-link\">13. \u4e09\u89d2\u6bd4<\/a><\/li>\n\t<li  id=\"menu-item-4081\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4081\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/shapes\/\" class=\"menu-link\">14. \u5e73\u9762\u53ca\u7acb\u9ad4\u5716\u5f62<\/a><\/li>\n\t<li  id=\"menu-item-4082\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4082\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/15-probability\/\" class=\"menu-link\">15. \u6982\u7387<\/a><\/li>\n\t<li  id=\"menu-item-4083\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4083\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/junior_summary\/16-statistics\/\" class=\"menu-link\">16. \u7d71\u8a08<\/a><\/li>\n<\/ul>\n<\/li>\n<li  id=\"menu-item-3231\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-3231\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental_algebra\/\" class=\"menu-link\">\u57fa\u790e &#8211; \u6578\u8207\u4ee3\u6578<\/a><\/li>\n<li  id=\"menu-item-3241\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-3241\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental-shape_n_space\/\" class=\"menu-link\">\u57fa\u790e &#8211; \u5ea6\u91cf\u3001\u5716\u5f62\u8207\u7a7a\u9593<\/a><\/li>\n<li  id=\"menu-item-3246\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-3246\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/fundamental_data_handling\/\" class=\"menu-link\">\u57fa\u790e &#8211; \u6578\u64da\u8655\u7406<\/a><\/li>\n<li  id=\"menu-item-3290\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-3290\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/non_fundamental_algebra\/\" class=\"menu-link\">\u975e\u57fa\u790e &#8211; \u6578\u8207\u4ee3\u6578<\/a><\/li>\n<li  id=\"menu-item-3288\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-3288\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/non_fundamental-shape_n_space\/\" class=\"menu-link\">\u975e\u57fa\u790e &#8211; \u5ea6\u91cf\u3001\u5716\u5f62\u8207\u7a7a\u9593<\/a><\/li>\n<li  id=\"menu-item-3289\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-3289\"><a href=\"https:\/\/www.study-together.com\/edu\/dse-maths-core\/non_fundamental_data_handling\/\" class=\"menu-link\">\u975e\u57fa\u790e &#8211; \u6578\u64da\u8655\u7406<\/a><\/li>\n<\/ul><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>10.1\u00a0\u7406\u89e3\u76f4\u7dda\u65b9\u7a0b (Understand the Equation of a Straight Line 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