已知平行四边形ABCD的顶点A(3,-1)、C(2,-3),点D在直线3x-y+1=0上移动,则点B的轨迹方程为( )
A.3x-y-20=0(x≠3) | B.3x-y-10=0(x≠3) |
C.3x-y-9=0(x≠2) | D.3x-y-12=0(x≠5) |
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已知平行四边形ABCD的顶点A(3,-1)、C(2,-3),点D在直线3x-y+1=0上移动,则点B的轨迹方程为( )
A.3x-y-20=0(x≠3) | B.3x-y-10=0(x≠3) |
C.3x-y-9=0(x≠2) | D.3x-y-12=0(x≠5) |