若实数x,y满足x-y+1≤0,且x>0,则y/x的取值范围是?(请用线性规划解,

Question

若实数x,y满足x-y+1≤0,且x>0,则y/x的取值范围是?(请用线性规划解,

Answer 1

y>=x+1,y/x>=(x+1)/x=1+1/x,x>0,y/x>1.