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x﹣2y﹣1=0 x﹣2y+1=0 3x﹣2y+1=0 x+2y+3=0
3x+4y+5=0 3x+4y-5=0 -3x+4y-5=0 -3x+4y+5=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
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0
2x+y-3=0 2x-y-3=0 2x+y+3=0 2x-y+3=0
3x+y-6=0 3x-y+6=0 x+y-3=0 x-3y-2=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
x+2y-1=0 2 x+y-1=0 2 x+y-3=0 x+2y-3=0
2x﹣y﹣3=0 2x﹣y+3=0 2x+y+3=0 2x+y﹣3=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
y=2x+3 y=﹣2x+3 y=﹣2x﹣3 y=﹣3x+2
y=3x-1 y=3x+1 y=-3x+1 y=-3x-1
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0