Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 8 - Section 8.4 - Interval Notation, Finding Domains and Ranges from Graphs, and Graphing Piecewise-Defined Functions - Exercise Set - Page 604: 9


Interval Notation: (-1, 5] Number Line: Closed circle on 5, open circle on -1, the area in between these values on the number line is shaded

Work Step by Step

Because 5>=x>-1, 5 is included and -1 is not included in the number line. Therefore, the solution will include all values that are in between 5 and -1, including 5 but not -1. The interval notation uses closed brackets on 5 but open on -1, because 5 is included but not -1.
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