ky10的知识精选

.设直线l1:kx﹣y+1=0,l2:x﹣ky+1=0,若l1∥l2,则k=(  )A.﹣1         ...
问题详情:.设直线l1:kx﹣y+1=0,l2:x﹣ky+1=0,若l1∥l2,则k=()A.﹣1          B.1                         C.±1           D.0【回答】A知识点:直线与方程题型:选择题...
热门标签