Precalculus (6th Edition)

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

Chapter 2 - Graphs and Functions - 2.2 Circles - 2.2 Exercises - Page 199: 1


$(0, 0)$; $7$ units

Work Step by Step

The circle $x^2+y^2=r^2$ has its center at $(0,0)$ and a radius of $r$ units. The given equation can be written as $x^2+y^2=7^2$. Thus, the center is at $(0, 0)$ and $r=7$. Therefore, the missing expressions in the given statement are (in order): $(0, 0)$; $7$ units
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