Answer
See graph and explanations.
Work Step by Step
Step 1. From the equation, we have
$a=4, b=3, c=\sqrt {16-9}=\sqrt {7}$
and a center at $(-1,2)$
Step 2. See graph; we can locate the foci at $(-1,2\pm\sqrt 7)$
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 - Review Exercises - Page 1035: 6
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