For a model with only two variables, it is possible to solve the problem without a computer by
drawing the feasible region and determining how the ob jective is optimized on that region. We go
through that process here. The purpose of this exercise is to give you intuition and understanding
of linear programming models and their solution. In any real application, you would use a computer
to solve even two variable problems (we outline how to use Excel's Solver routine to nd solutions
in the next section).