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y=2x+2 y=2x﹣2 y=2(x﹣2) y=2(x+2)
x﹣2y﹣1=0 x﹣2y+1=0 3x﹣2y+1=0 x+2y+3=0
y=-2x-3 y=-2x-6 y=-2x+3 y=-2x+6
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
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
y=2x+2 y=2x﹣2 y=2(x﹣2) y=2(x+2)
2x+3y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=0
2x+y-6=0 x-2y+7=0 x-y+3=0 x+2y-9=0
x-2y-2=0 x-2y+2=0 x+2y-2=0 x+2y+2=0
y=-6x+1 y=-2x-3 y=-2x+5 y=2x-3
x+2y-1=0 2x+y-1=0 2x+y-3=0 x+2y-3=0