Answer
$ y=-6x-9$
Work Step by Step
$ m=f^{,}(x)=\dfrac{d^2x}{dx^2}=2x $
Put $ x=-3$
So, $ m=f^{,}(-3)=2(-3)=-6$
The equation of the line is: $ y=mx+c \implies c= y-x $
Now, $ y=9-(-6)(-3)=-9$
So, $ y=-6x-9$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 11 - Test - Page 1180: 15
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