Answer
downward; (2,-6); -6; maximum
Work Step by Step
Because a equals to -3, the graph of f opens downward; h is 2, k is -6, so the vertex would be (2,-6); f(2)=-6, and when x is 2, it's the maximum value of f.
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 3 - Section 3.1 - Quadratic Functions and Models - 3.1 Exercises - Page 251: 4
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