Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - R.2 Real Numbers and Their Properties - R.2 Exercises: 105

Answer

$d(P, Q)=3$

Work Step by Step

RECALL: The distance between the points P and Q on a number line, whose coordinates are p and q, respectively, is given by the formula: $d(P, Q) = |p-q| \text{ or } d(P, Q) = |q-p|$ Use the formula above to obtain: $d(P, Q) \\= |-1-(-4)| \\= |-1+4| \\= |-3| \\= 3$
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