College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 1 - Section 1.5 - Solving Inequalities - 1.5 Assess Your Understanding - Page 127: 18


Interval Notation: $(-1 , 1]$ Inequality Form: $-1 \lt x \le 1$

Work Step by Step

The graph involves an open parenthesis and a close bracket. This means that the number where the bracket is located (1) is included in the interval while the number where the parenthesis is located (-1) is not included in the interval. The graph covers $x$ from $-1$ to $1$. This means that the interval is $(-1 , 1]$. The inequality equivalent of this is $-1 \lt x \le 1$.
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