Answer
$\frac{x^2}{9}-\frac{y^2}{4}=1$
Work Step by Step
By dividing $36$ on both sides, we get $\frac{x^2}{9}-\frac{y^2}{4}=1$ and this equation differs from that of an ellipse in that the sign in the middle is negative.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 9 - Section 9.1 - The Ellipse - Exercise Set - Page 968: 95
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