在平面直角坐标系中,已知点A(x,y),点B(x﹣my,mx﹣y)(其中m为常数,且m≠0),则称B是点A的“m族衍生点”.例如:点A(1,2)的“3族衍生点”B的坐标为(1﹣3×2,3×1﹣2),即B(﹣5,1).
(1)点(2,0)的“2族衍生点”的坐标为 ;
(2)若点A的“3族衍生点”B的坐标是(﹣1,5),则点A的坐标为 ;
(3)若点A(x,0)(其中x≠0),点A的“m族衍生点“为点B,且AB=OA,求m的值;
(4)若点A(x,y)的“m族衍生点”与“﹣m族衍生点”关于y轴对称,则点A的位置在 .
(1)点(2,0)的“2族衍生点”的坐标为 ;
(2)若点A的“3族衍生点”B的坐标是(﹣1,5),则点A的坐标为 ;
(3)若点A(x,0)(其中x≠0),点A的“m族衍生点“为点B,且AB=OA,求m的值;
(4)若点A(x,y)的“m族衍生点”与“﹣m族衍生点”关于y轴对称,则点A的位置在 .
19-20七年级下·北京东城·期中 查看更多[2]
更新时间:2020-06-26 11:46:29
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名校
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