Answer
The vertex is $(1, -5)$.
Work Step by Step
Please see the graph of the parabola. If the function were $y=5(x+5)^2+1$, then the graph would have its vertex at $(-5, 1)$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 10 - Section 10.1 - The Parabola and the Circle - Exercise Set - Page 610: 89
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