Question

How do you know a function is a quadratic function?

Answer 1

Explanation:

A function is quadratic if you can express it in the form :

f(x) = Ax² + Bx + C

and that A is non-zero.

The highest degree variable is 2 (i.e x² is the highest exponent)

Answer 2

if the X variable is squared, then the function is quadratic