Answer
$y^{2}=-\dfrac {1}{5}x$
Work Step by Step
Directix $x=\dfrac {1}{20}=-p\Rightarrow p=-\dfrac {1}{20}$
$y^{2}=4px=4\times \left( -\dfrac {1}{20}\right) \times x=-\dfrac {1}{5}x$
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: 41
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