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2018_2019学年高中数学第三章直线与方程3.2.3直线的一般式方程情境导学素材新人教A版必修2.doc

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13.2.3 直线的一般式方程【情境导学】目前为止,已学过的直线方程有:点斜式:y-a=k(x-b) 斜截式 y=kx+b;两点式: = 截距式 + =1.(1)上述形式的直线方程都可以化为二元一次方程的一般形式吗?(都可以)(2)试总结二元一次方程与直线之间的关系.(平面上任一条直线都可以用一个关于 x,y的二元一次方程表示.任一关于 x,y的二元一次方程都可以表示一条直线)

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