Question

what is the vertex form of a quadratic function? f(x)=(x + h)^2 + k f(x)=a(x - h) - k f(x)=a(x - h)^2 + k f(x)=2a(x - h)^2 + k

Explanation:

Step1: Recall vertex - form definition

The vertex - form of a quadratic function is used to easily identify the vertex of the parabola. The general vertex - form of a quadratic function is $f(x)=a(x - h)^2+k$, where $(h,k)$ is the vertex of the parabola.

Answer:

$f(x)=a(x - h)^2+k$