Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.9 - Linear Inequalities and Absolute Value Inequalities - Exercise Set - Page 140: 124


Parenthesis: a point does not belong to the set of solutions Square brackets: a point does belong to the set of solutions

Work Step by Step

When we graph the solution of an inequality, we put parenthesis to show that a point is not in a set of the solution and we put square brackets to show the point is in the set of the solution.
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