## Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

# Chapter 1 - Section 1.1 - Real Numbers - 1.1 Exercises: 4

#### Answer

(a) absolute value (b) positive

#### Work Step by Step

(a) This symbol stands for the absolute value of $x$, that is, the distance between $x$ and $0$ at the number line. (b) Since the absolute value of $x$ stands for the distance between $x$ and 0 at the number line, it will always have a positive value, except when $x=0$.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.