Answer
vertex: $(-2,-1)$
Foci: $(-5,-1)$
Directrix: $x=1$
Work Step by Step
$y^2+2y+1-1+12x+25=0$
$(y+1)^2=-12(x+2)$
Thus,
Vertex: $(-2,-1)$
Foci: $(-5,-1)$
Directrix: $x=1$
Multivariable Calculus, 7th Edition
by Stewart, James
Published by
Brooks Cole
ISBN 10:
0-53849-787-4
ISBN 13:
978-0-53849-787-9
Chapter 10 - Parametric Equations and Polar Coordinates - 10.5 Exercises - Page 700: 7
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