Question 940448
{{{y <= x}}}
{{{x + y>= 1}}}
-------------------

{{{y <= x}}}.......line will be solid and part of solution
{{{y>= -x+1}}}.......line will be solid and part of solution


{{{-x+1<=y<= x}}}


your answer is: http://i60.tinypic.com/2vtz6o4.jpg