Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - Review Exercises - Page 152: 14

Answer

Center: $(0,0)$; Radius: $r=2$

Work Step by Step

Equation of a circle: $(x-h)^2+(y-k)^2=r^2~~ $ (standard form) Center: $(h,k)$; Radius: $r$ $x^2+y^2=4$ $(x-0)^2+(y-0)^2=2^2$ $h=0$, $k=0$, $r=2$
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