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2x-y-3=0 x-2y+3=0 2x+y+5=0 x+2y-5=0
3x+4y+5=0 3x+4y-5=0 -3x+4y-5=0 -3x+4y+5=0
x﹣2y+7=0 2x+y﹣1=0 x﹣2y﹣5=0 2x+y﹣5=0
x+2y-5=0 x+2y+5=0 2x-y=0或x+2y-5=0 2x-y=0或x-2y+3=0
x-3y+7=0 x-3y+13=0 2x-y+7=0 3x-y-5=0
x-2y-5=0 x-2y+7=0 2x+y-1=0 2x+y-5=0
3x+4y+5=0 3x+4y-5=0 -3x+4y-5=0 -3x+4y+5=0
2x+y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=0
2x–y=0 2x–y–2=0 x+2y–3=0 x+2y–5=0
x﹣y+1=0 x+y﹣1=0 x﹣y﹣1=0 x+y+1=0
3x+4y﹣5=0 3x+4y+5=0 3x﹣4y+5=0 3x﹣4y﹣5=0
2x+3y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=0
(1,2)且垂直于直线2x+y﹣5=0的直线方程为( ) A.x﹣2y+4=0 2x+y﹣7=0 x﹣2y+3=0 x﹣2y+5=0
(2,3)且垂直于直线2x+y-5=0的直线方程为( ). A.x-2y+4=0 2x+y-7=0 x-2y+3=0 x-2y+5=0
2x+y-1=0 2x+y-5=0 x+2y-5=0 x-2y+7=0
+△X,+△y +△X,-△y -△X,+△y -△X,-△Y
y=-6x+1 y=-2x-3 y=-2x+5 y=2x-3