Algebra: A Combined Approach (4th Edition)

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

Appendix D - Exercise Set: 48


$y\in(\infty;-4]\cup[4;\infty)$ To graph the solution set, put to square brackets at the points -4 and 4. The set is the space to the left of -4 and to the right of 4.

Work Step by Step

The absolute value of y is larger than or equal to 4, so the value of y is either larger than 4 or smaller than -4. The soltuion set is any number whose distance to 0 is larger than or equal to 4.
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