Answer
Circle
Work Step by Step
${{y}^{2}}=20-{{x}^{2}}$
Add ${{x}^{2}}$ to both sides
${{x}^{2}}+{{y}^{2}}= \sqrt{20}^2$
This matches the standard equation of a circle.
Therefore, the graph of the equation is a circle.
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 13 - Conic Sections - 13.3 Conic Sections: Hyperbolas - 13.3 Exercise Set - Page 871: 31
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