Answer
vertex: $(0,0)$ Focus: $(0,-\frac{2}{3})$ Directrix: $y=\frac{2}{3}$
Work Step by Step
$3x^2+8y=0$
or, $x^2=4(\frac{-2}{3})y$
Thus,
vertex: $(0,0)$ Focus: $(0,-\frac{2}{3})$ Directrix: $y=\frac{2}{3}$
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: 4
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