Objective
To graph two-variable inequalities
Linear Inequalities
In some situations you need to compare quantities. You can use inequalities for situations that involve these relationships: less than, less than or equal to, greater than, and greater than or equal to.
Essential Understanding Graphing an inequality in two variables is similar to graphing a line. The graph of a linear inequality contains all points on one side of the line and may or may not include the points on the line.
A linear inequality is an inequality in two variables whose graph is a region of the coordinate plane bounded by a line. This line is the boundary of the graph. The boundary separates the coordinate plane into two half-planes, one of which consists of solutions of the inequality.