I'm starting to learn about linear programming. On one of my HW questions I was able to write the LP, graph (shown below), and find the optimal solution (3,2) without a problem. When I checked my solution in the manual, I had everything correct expect the solution manual said that (0,0) is also in the feasible region and should be tested. Visually, (0,0) is not in the feasible region, so I must be missing something. This is the second question where (0,0) has been tested, even though it's not in the feasible region. I appreciate any insight you can provide.