Explain why you can use a test point to determine which region or regions of the graph of an inequality should be shaded.

We should use a test point to determine the region or regions of the graph of an inequality should be shaded because by plotting an inequality the graph is divided into two regions : one which lie in feasible region and the other does not .

Now in order to check the feasible region we start by taking a test point and see whether it makes the inequality true or not.

after simplifying it i got: -36.25 as my answer. hope that !