Answer
$(h,k)$.
Work Step by Step
The vertex of a function $f(x)=a(x-h)^2+k$, $a\ne0$ is $(h,k)$.
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 8 - Section 8.3 - Quadratic Functions and Their Graphs - Concept and Vocabulary Check - Page 625: 4
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