平面解析几何经典题型.ppt

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,*,8.8,平面解析几何经典题型,【,答案,】B,题型,1,.,求直线的方程,1,.,过点,P,(,-,3,2),、,Q,(4,5),的直线方程是,(,),A,.,7,x-,3,y+,23,=,0 B,.,3,x-,7,y+,23,=,0,C,.,7,x-,3,y-,7,=,0 D,.,3,x-,7,y-,7,=,0,2,.,过点,(0,-,1),且平行于直线,2,x+y-,1,=,0,的直线方程是,(,),A,.,2,x+y+,1,=,0 B,.,2,x+y=,0,C,.x-,2,y+,2,=,0 D,.x-,2,y-,2,=,0,3,.,过点,A,(3,2),且与直线,2,x-y+,3,=,0,垂直的直线方程是,.,【,答案,】A,x+,2,y-,7,=,0,题型,2,.,直线与圆的位置关系,4,.,过点,P,(2,0),且与圆,x,2,+y,2,+,2,x-,4,y+,1,=,0,相切的直线的方程为,.,5,.,圆,x,2,+y,2,+,2,x+,6,y+,9,=,0,的圆心到直线,3,x-,4,y=,4,的距离为,.,1,【,答案,】C,【,答案,】C,【,答案,】D,【,答案,】A,【,答案,】D,5,【,答案,】C,【,答案,】B,【,答案,】D,y,2,=,16,x,或,x,2,=-,8,y,