Answer
$y=-x^{2}$
Work Step by Step
$p=-\dfrac {1}{4}\Rightarrow $
$x^{2}=4py=4\times \left( -\dfrac {1}{4}\right) \times y=-y\Rightarrow $
$y=-x^{2}$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 11 - Section 11.1 - Parabolas - 11.1 Exercises - Page 789: 32
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