Answer
See below.
Work Step by Step
After dividing by $36$ the equation: $\frac{x^2}{9}-\frac{y^2}{4}=1$
This differs from the equation of an ellipse by having a subtraction sign instead of a summation sign.
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 7 - Conic Sections - Exercise Set 7.1 - Page 673: 87
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