Answer
c)
Work Step by Step
Since the vertex is at $(3,2)$ and the directrix is a line $a=4$ units below it (according to the imageÖ, its equation is: $y=2-4=-2$, hence the answer is c).
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 10 - Analytic Geometry - 10.2 The Parabola - 10.2 Assess Your Understanding - Page 646: 12
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