设实数x,y满足①x-y-2≤0,②x+2y-4≥0,③2y-3≤0,则y/x的最大值为注:希望能给予图示!

问题描述:

设实数x,y满足①x-y-2≤0,②x+2y-4≥0,③2y-3≤0,则y/x的最大值为
注:希望能给予图示!