College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.2 - Algebra Essentials - R.2 Assess Your Understanding: 36

Answer

$d(C, A) = 3$

Work Step by Step

$d(C, A)$ represents the distance between the points C and A on a number line. If the coordinates of C and A are $c$ and $a$, respectively, then: $d(C, A) = |c-a|$ Based on the given number line, the coordinates of C and A are 0 and $-3$, respectively. Use the formula above to obtain: $d(C, A) = |0-(-3)| = |0+3| =|3| = 3$ Thus, $d(C, A) = 3$
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