直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ...

来源:语文精选馆 2.04W

问题详情:

直线3ax-y-1=0与直线(a-直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ...)x+y+1=0垂直,则a的值是(  )

A.-1或直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ... 第2张                                  B.1或直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ... 第3张

C.-直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ... 第4张或-1                                D.-直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ... 第5张或1

【回答】

D

解析:由3a(a-直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ... 第6张)+(-1)×1=0,得a=-直线3ax-y-1=0与直线(a-)x+y+1=0垂直,则a的值是(  )A.-1或             ... 第7张或a=1.

知识点:直线与方程

题型:选择题

热门标签