Answer
Opens down
Work Step by Step
Parabola goes from $(3,2)$ up to $(4,7)$, therefore it is increasing, then goes down again to $(9,2)$, so it is decreasing. This is possible only when it opens down.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 8 - Graphing Quadratic Functions - 8.3 - Graphing f(x) = ax^2 + bx + c - Exercises - Page 438: 43
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