Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 1 - Section 1.9 - Distance and Midpoint Formulas; Circles - Exercise Set - Page 280: 42

Answer

$C(0,0), r=7$, See graph. Domain $[-7,7]$ and Range $[-7,7]$ .

Work Step by Step

Step 1. Given the equation $x^2+y^2=49$, comparing with the standard equation for a circle, we can identify the center and radius of the circle as $C(0,0), r=7$ Step 2. Graph the equation as shown in the figure. Step 3. Based on the graph, we can identify: Domain $[-7,7]$ and Range $[-7,7]$ .
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