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(-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
x+2y-5=0 x+2y+5=0 2x-y=0或x+2y-5=0 2x-y=0或x-2y+3=0
={(x,y)|x+2y﹣4=0},集合 ={(x,y)|x=0},则A.∩B.=( ) A.{0,2}B.{(0,2)} (0,2) ∅
={y|y=2x,x<0}, ={y|y=log2x},则A.∩B.=( ) A.{y|y>0}B.{y|y>1} {y|0∅
2x+y﹣8=0 3x﹣2y+1=0 x+2y﹣5=0 3x+2y﹣7=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
3x+2y-7=0 2x+y-4=0 x-2y-3=0 x-2y+3=0
x-2y-2=0 x-2y+2=0 x+2y-2=0 x+2y+2=0
2x-y-1=0 2x+y+1=0 2x-y+1=0 2x+y-1=0
(-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