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 7: 47


$(0,0)$ and $(8,0)$.

Work Step by Step

Let the point(s) be $(x,0)$, its distance to $(4,-3)$ is $d=\sqrt {(x-4)^2+(0+3)^2}=5$ or $(x-4)^2=16$, thus $x=4\pm4=0,8$ which give answers $(0,0)$ and $(8,0)$.
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