Question

Which is a quadratic function?

A y = X-9
B y = x² +9
C y = x + 2x -9

Answer 1

The answer is b !!!!!

Answer 2

B y = x² +9

Explanation:

A quadratic function must have the highest power of x being x^2 and must have an x^2 term

A y = X-9 - linear

B y = x² +9 quadratic

C y = x + 2x -9 - linear