To calculate the vertices of the feasible region, follow these steps:

Example:

Shade the feasible region for the following inequalities:

\(y<= -1/2X +4\)

\(y>X - 2\)

\(X >= -4\)

1.    Press the Inequality Graphing App icon .

2.    Graph the feasible region following the steps in feasible region.

3.    Press a à to CALCULATE menu.

4.    Press right arrow key › to INEQUALITY menu.

5.    Select option 1 "Boundary Intersections"

6.    The boundary intersections for the first two relations are computed.

7.    To move between all the boundary intersections, right arrow keys › and left arrow keys ‹ will move among the intersections between the first relation and any other it intersects.

8.    Up arrow keys ≤ and down arrow keys ≥ will change focus to other relations. Then use the right › and left ‹ arrow keys to find intersections between the relation in focus and other relations.