Answer
-9, 9
Work Step by Step
The additive inverse of a number $a$ is $-a$. Therefore, the additive inverse of 9 is $-(9)=-9$.
The absolute value of a number $a$ is equal to $a$ if $a\geq0$ and is equal to $-a$ if $a\lt0$. Therefore, $|9|=9$.
Intermediate Algebra (12th Edition)
by Lial, Margaret L.; Hornsby, John; McGinnis, Terry
Published by
Pearson
ISBN 10:
0321969359
ISBN 13:
978-0-32196-935-4
Chapter R - Section R.1 - Basic Concepts - R.1 Exercises - Page 10: 38
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