A graphing calculator can be used to solve a linear inequality of the form . If we eliminate the point where , then every other x-value yields a result where or .
Similar logic follows for inequalities of the form .
Consider the inequality . We will graph and . The second graph has a shaded section showing the interval where . Graphing Calculator Explorations Solve the inequality using the graphing method mentioned above, and verify your answer by using algebraic methods to solve the equation. Use the graphing method to show that is the solution to the inequality .