Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 9 - Review Exercises - Page 1035: 29

Answer

See figure: vertex $(0,2)$, focus $(-4,2)$, and directrix $x=4$
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Work Step by Step

Step 1. From the given equation, we can find $p=\frac{-16}{4}=-4$ with the parabola opening to the left as shown in the figure. Step 2. We can identify the vertex at $(0,2)$, focus at $(-4,2)$, and directrix as $x=4$
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