| To demonstrate how slack variables should be interpreted, consider
the following linear programming model: |
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| This is the model for Leo Coco's problem presented in the demo, Graphical
Method. That demo describes how to find the optimal solution graphically,
as displayed on the right. |
| Although the graphical method is limited to two variables, the simplex
method is an algebraic procedure that also can solve much larger problems.
Slack variables play a key role in the simplex method. This demo focuses
on the geometric interpretation of slack variables. |