Answer
The parabola $y=ax^2$ opens up for $a>0$ and down for $a<0$
Work Step by Step
Parabola opens up when the coefficient of $x^2$ is positive and opens down when it is negative.
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 - 8.1 - Graphing f(x) = ax^2 - Exercises - Page 423: 2
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