直线ax+2y-1=0与x+(a-1)y+2=0平行,则a的值为( ):

昕玥2019-12-17  17

问题 直线ax+2y-1=0与x+(a-1)y+2=0平行,则a的值为( ):

选项 A.-1/2B.3/2C.-2或1D.-1或2

答案D

解析[img]/upload/tiku/459/6542736_1.png[/img]
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