Question: Graph a 2-variable integer feasible region. Here are the decision variables and constraints of an integer linear optimization model: x1, x2 are integer x1 -

Graph a 2-variable integer feasible region.

Here are the decision variables and constraints of an integer linear optimization model:

x1, x2 are integer x1 - x2 -1.5 x1 1 x1 3 x1, x2 0 i) How many feasible decision points are there? ii) If the objective function is to maximize x1, then how many optimal decision points are there?

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