Question

part A i already answer i only need part BPART B : IF JOSIE IS NOT CORRECT, FIX HER WORK TO DETERMINE THE VERTEX. IF SHE IS CORRECT, WHAT IS THE VERTEX?

Answer 1

ANSWER

Josie did not make a mistake

EXPLANATION

The vertex form of a quadratic equation is given in the form:

$y=(x-h)^2\text{ + k}$

where (h, k) is the vertex

Jose rewrote the given equation to arrive at:

$y\text{ = (x - }2)^2\text{ - 8 }$

And her vertex was (2, -8)

Comparing this with the general form written above, we see that every step taken and the final answer are correct.

Therefore, Josie did not make a mistake.