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: 10


Interval Notation: [-7, -3) Number Line: Closed circle on -7, open circle on -3, area in between these values on the number line is shaded in

Work Step by Step

Because -3>x>=-7, -7 is included and -3 is not included in the number line. Therefore, the solution will include all values that are in between -7 and -3, including -7 but not -3. The interval notation uses closed brackets on -7 but open on -3, because -7 is included but not -3.
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