# 9.3 – Linear Equation and Inequalities 1. Linear Equations 2.

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9.3 – Linear Equation and Inequalities 1

Linear Equations 2

Solve. 1. 2. 3. 3

Interval Notation 4

5

Linear Inequalities Graph on a number line and write using interval notation. 1. x > -4 2. -5 3 6

Linear Inequalities To solve inequalities: 1.Change the inequality to an equality. 2.Solve for the variable. 3.Plot the solution(s) on a number line. 4.Choose a test point in each region of the number line separated by the solutions. 5.Substitute the test point into the original inequality to see if it makes the region true or false. 6.Shade the true regions of the number line and use the appropriate interval notation symbol on the solution. 7.Write solution using interval notation. 7

Application Problems Solve the application problems. 1. 2. 8

Linear Inequalities Solve. 1. 2. 9

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