The line normal to the graph of f at the point (1,2) passes through the point (-1,1).  Which of the following is the value of f'(1)?  Be sure to explain your answer. A) -2 B) 2 C) -1/2 D) 3

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.2: Introduction To Conics: parabolas
Problem 4ECP: Find an equation of the tangent line to the parabola y=3x2 at the point 1,3.
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The line normal to the graph of f at the point (1,2) passes through the point (-1,1).  Which of the following is the value of f'(1)?  Be sure to explain your answer.

A) -2
B) 2
C) -1/2
D) 3

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