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x﹣2y﹣1=0 x﹣2y+1=0 3x﹣2y+1=0 x+2y+3=0
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0
x-3y+7=0 x-3y+13=0 2x-y+7=0 3x-y-5=0
直线2x+y-2=0 直线2x+y=0 直线2x+y=0或直线2x+y-2=0 直线2x+y=0或直线2x+y+2=0
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0
直线x+y-2=0的左下方 直线x+y-2=0的右上方 直线x+2y-2=0的右上方 直线x+2y-2=0的左下方
2x+y-3=0 2x-y-3=0 2x+y+3=0 2x-y+3=0
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=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+3=0
2x–y=0 2x–y–2=0 x+2y–3=0 x+2y–5=0
x+2y-1=0 2 x+y-1=0 2 x+y-3=0 x+2y-3=0
x﹣y+1=0 x+y﹣1=0 x﹣y﹣1=0 x+y+1=0
2x+3y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=0
x-3y+7=0 x-3y+13=0 2x-y+7=0 3x-y-5=0
A(x-x0)+B(y-y0)=0 A(x-x0)-B(y-y0)=0 B(x-x0)+A(y-y0)=0 B(x-x0)-A(y-y0)=0
2x+y-6=0 x-2y+7=0 x-y+3=0 x+2y-9=0
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0