Answer
vertex: $(0,0)$ Focus: $(-\frac{1}{2},0)$ Directrix: $x=\frac{1}{2}$
Work Step by Step
$2x=-y^2$
or, $y^2=4(\frac{-1}{2})x$
Thus, vertex: $(0,0)$ Focus: $(-\frac{1}{2},0)$ Directrix: $x=\frac{1}{2}$
Calculus: Early Transcendentals 8th Edition
by Stewart, James
Published by
Cengage Learning
ISBN 10:
1285741552
ISBN 13:
978-1-28574-155-0
Chapter 10 - Section 10.5 - Conic Sections - 10.5 Exercises - Page 680: 3
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