Answer
$y^2=36x$
Work Step by Step
Focus: $(9,0)$; Directrix: $(x=-9)$
$y^2=4px$ (parabola equation)
$F(p,0)$ (focus formula)
$x=-p$ (directrix formula)
$F(9,0)$
$4(9)=36$
$y^2=36x$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter 7 - Conic Sections - Exercise Set 7.3 - Page 699: 18
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