Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Appendix A - Equations and Inequalities: 77

Answer

A parenthesis $“(“$ or $“)”$ is used to show exclusiveness. A square bracket $“[“$ or $“]”$ is used to show inclusiveness.

Work Step by Step

When graphing the solution set of a linear inequality, a parenthesis $“(“$ or $“)”$ is used to show that a number is exclusive and not part of the solution while a square bracket $“[“$ or $“]”$ is used to show that a number is inclusive and part of the solution.
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