## Algebra 1

### Linear Inequalities

Solutions for linear inequalities in one and two variables can be described both graphically and symbolically. The activities in this unit explore the effect of multiplying a value by a negative number, describe graphical and symbolic solutions to inequalities, and develop the concept that a linear equation divides the coordinate plane into two half planes each described by a linear inequality.

### Algebra 1: Linear Inequalities Activities

Title Type

#### Simple Inequalities on a Number Line

Observe the differences in the graphs when <, ≤, =, >, and ≥ are used.

• 5630

#### Multiplying Inequalities by Negative Numbers

Investigate the effect of multiplying the numbers on a number line by a negative number.

• 5103

#### Linear Inequalities in One and Two Variables: Rays and Half Planes

Introduce linear inequalities by relating them to simple inequalities on the number line.

• 5499

#### Linear Inequalities in Two Variables

Learn the basics of graphing linear inequalities.

• 5643

#### Exploring Graphs of Inequalities

Test ordered pairs to determine if they are part of the solution set to an inequality.

• 5170

#### Two-Variable Linear Inequalities

Graph, solve and write two-variable linear inequalities.

• 4975