Answer
$y^2=16x$
Work Step by Step
Directrix: $x=-p~~$ (Horizontal axis)
$-p=-4$
$p=4$
Parabola in the standard form with the vertex at origin (horizontal axis):
$y^2=4px$
$y^2=4(4)x$
$y^2=16x$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 4 - 4.3 - Conics - 4.3 Exercises - Page 337: 24
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