Key learning points

1. A linear inequality involving two variables can be graphed
2. A solid line indicates the solutions on the line are valid
3. A dashed line indicates a strict inequality
4. By testing points not on the line, you can determine the region that satisfies the inequality
5. This region is the solution set

Keywords

• Region (inequalities) - A region is an area that graphically represents the solutions to one or more inequalities. Every coordinate pair within the region satisfies the inequalities that define the region.

Common misconception