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x﹣2y﹣1=0 x﹣2y+1=0 3x﹣2y+1=0 x+2y+3=0
x+y-2=0 x-y-2=0 x-y+2=0 x+y+2=0
3x﹣2y﹣1=0 3x﹣2y+1=0 2x﹣3y+1=0 2x﹣3y﹣1=0
y=2x+2 y=2x﹣5 y=2x+1 y=2x﹣1
2x+y-3=0 2x-y-3=0 2x+y+3=0 2x-y+3=0
2x+y﹣3=0 2x﹣y﹣3=0 2x+y+3=0 2x﹣y+3=0
2x+y-6=0 x-2y+7=0 x-y+3=0 x+2y-9=0
y=3x-3 y=-3x+3 y=-3x-3 y=3x+3