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2x2y3+y+3xy 2x2y2﹣2y+3xy 2x2y3+2y﹣3xy 2x2y3+y﹣3xy
y﹣4=0 x﹣3=0 y﹣4=2(x﹣3) y﹣4=x﹣3
(-2,2), (4,-2)等距离,则直线l的方程为( ). A.2x+3y-18=0 B.2x-y-2=0 3x-2y+18=0或x+2y+2=0 2x+3y-18=0或2x-y-2=0
2x-y+7=0和x-3y-4=0 x-2y+7=0和3x-y-4=0 x-2y+7=0和x-3y-4=0 2x-y+7=0和3x-y-4=0
x-y+1=0 x-y=0 x+y+1=0 x+y=0
3x+y-6=0 3x-y+6=0 x+y-3=0 x-3y-2=0
(2,4)与 (3,3)关于直线l对称,则直线l的方程为( ) A.x+y=0B.x-y=0 x+y-6=0 x-y+1=0
2x+y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=0
3x+2y-1=0 3x+2y+7=0 2x-3y+5=0 2x-3y+8=0
x-2y+4=0 3x+4y-18=0 y+3=0 x-2=0
2x+3y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=0
4x-3y-3=0 3x-4y-3=0 3x-4y-4=0 4x-3y-4=0
X2+2Y22XY2 2X2+Y22X2Y 3X2+Y22X3Y X2+3Y22XY3
(-2,2), (4,-2)等距离,则直线l的方程为( ) A.2x+3y-18=0 B.2x-y-2=0 3x-2y+18=0或x+2y+2=0 2x+3y-18=0或2x-y-2=0
3x+4y-14=0 3x-4y+14=0 4x+3y-14=0 4x-3y+14=0