江苏省连云港市高中数学第2章平面解析几何初步2.1.2直线的方程练习2(无答案)苏教版必修2.doc

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江苏省连云港市高中数学第2章平面解析几何初步2.1.2直线的方程练习2(无答案)苏教版必修2.doc_第1页
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1直线的方程分层训练1下列直线中,斜率为 43,且不经过第一象限的是( )()A3470xy()B70xyC2D422直线 l经过点 (,1),且与直线 4xy和 x轴围成等腰三角形,则这样的直线的条数共有( )()A1条 ()B2条 ()C3条 ()4条3已知直线 l: 0xy( ,AB不全为 0) ,点 0(,)Pxy在 l上,则 l的方程可化为( )()A00)()Bxy()C00)()CDAxBy考试热点4直线 l经过点 (1,0),且通过一、二、三象限,它与两坐标轴所围成的三角形的面积为2,则直线 的方程是( )()Axy()B40xyC40D5已知直线过点 (2,1)和 (,),则直线的一般式方程为 6直线 3xym在两坐标轴上截距之和为 2,则实数 k等于 7已知直线 2()68axa不经过第二象限,求实数 a的取值范围8设直线 l的方程为22(3)(1)60mxmy,根据下列条件求 m的值:(1)直线 l的斜2率为 1;(2)直线 l经过定点 (1,)P拓展延伸9求证:不论 m取什么实数,直线 ()mx(21)5y总通过某个定点10若方程 60xyk仅表示一条直线,求实数 k的取值范围

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