Solving a simple one step inequality using division property of equality

The video tutorial explains how to solve a simple one-step inequality with a negative coefficient. It covers using inverse operations, flipping inequality signs when dividing by a negative number, rewriting inequalities with the variable on the left, and graphing the inequality on a number line. The tutorial emphasizes the importance of testing points and using open circles to represent inequalities that do not include the endpoint.

Describe the process of testing points to determine the solution set of an inequality.

What does it mean when you have an open circle on a number line in the context of inequalities?