∵L1//L2∴3/a=(a-2)/1得3=a²-2aa²-2a-3=0(a-3)(a+1)=0a=3舍去a=-1L2:-3x+3y-2=0 x-y+2/3=0L1:x-y+6=0d=|2/3-6|√2=8√2/3两直线之间的距离为8√2/3望采纳
先求a,a(a-2)=3,解得a=3 或者a= - 1(1)a=3时 两直线重合。(2)a= - 1时 。距离为d=8sqr(2)/3