Answer
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The four points on the graph we have are $(-3,0)$, $(3,0)$, $(0,-2)$, and $(0,2)$.
When $x=0$, we see $y=±2$. When $y=0$, we have $x=±3$.
$x^2/9 + y^2/4 \leq 1$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 13 - Group Activity - Modeling Conic Sections - Page 956: 5
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