Which point gives the vertex of f(x) = x2 – 4x + 21? Question 1 options: (–2,–17) (2,17) (–2,17) (2,–17)

Step-by-step explanation:

A parabola has the general function:

In this case we have:

where

the vertex of a parabola is in the coordinates:

substituting all of the known values, we get the following:

the vertex of   is at the point (2,17) which is the second option.

2

step-by-step explanation: