题目内容
到A(2,-3)和B(4,-1)的距离相等的动点的轨迹方程是________.
到A(2,-3)和B(4,-1)的距离相等的点的轨迹方程是
x-y-1=0
x-y+1=0
x+y-1=0
x+y+1=0