Answer
$x^2+y^2=r^2$
Work Step by Step
$r^2$ represents the radius of the circle squared.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 10 - Section 10.1 - The Parabola and the Circle - Vocabulary, Readiness & Video Check - Page 609: 8
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