Question

Explain how you know if the graph of a quadratic function will open up or down. ax^2+bx+c

Answer 1

There is an easy way to tell whether the graph of a quadratic function opens upward or downward: if the leading coefficient is greater than zero, the parabola opens upward, and if the leading coefficient is less than zero, the parabola opens downward.

Answer 2

hm, please be more specific with which "leading coefficient" you are mentioning because both A and B represent coefficients.

To clarify, it your a is a `positive` number, it opens `up`, and if your a is `negative` number, it opens `down`