A.x-3y-2="0" | B.3x+y-6=0 |
C.3x-y+6="0" | D.x-y-2=0 |
A.f(y+2,x)="0" | B.f(x-2,y)=0 |
C.f(y+2,x-2)="0" | D.f(y-2,x+2)=0 |
A.若A+B+C=0,则直线Ax+By+C=0必过定点 |
B.直线Ax+By+C=0与Bx-Ay+C=0恒有交点 |
C.设A·B≠0,过定点(x0,y0)且与直线Ax+By+C=0垂直的直线的方程是= |
D.过点(2,3)且在两坐标轴上的截距的绝对值相等的直线有且只有两条 |
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