Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter F - Foundations: A Prelude to Functions - Section F.1 The Distance and Midpoint Formulas - F.1 Assess Your Understanding - Page 6: 2



Work Step by Step

The distance between two points on the real number line with coordinates $a$ and $b$ is given by $d$ where: $$d= |b-a|$$ Here we have: $a=-3 \hspace{30pt} b=5$ Thus, $d= |5-(-3)| = |8| = \boxed{8}$
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