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: 4


Interval Notation: (-infinity, -0.2) Number Line: Closed circle on -0.2, entire left side of -0.2 on number line is shaded excluding -0.2

Work Step by Step

Because x < -0.2, -0.2 is not included in the number line. Therefore, the solution will include all values that are to the left of -0.2 on the number line, excluding -0.2. The interval notation uses open brackets on -0.2 and infinity because they are not included in the solution.
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