#### Answer

absolute;
$|a|$

#### Work Step by Step

RECALL:
For any real number $a$, $|a|$ represents the distance of $a$ from zero.
Thus, the distance from $0$ to $a$ on a number line is called the absolute value of $a$, denoted by $|a|$.

Published by
Pearson

ISBN 10:
0-13417-805-X

ISBN 13:
978-0-13417-805-9

absolute;
$|a|$

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