What is the vertex of the graph of the function f (x) = x2 + 8x - 2?

O (-4, 18)

O (0, - 2)

O (-8, - 2)

0 (-4, - 18)

-4,-18 or D

Step-by-step explanation:

Well you can use desmos and that shows the vertex plus I took the test on edge and got it right

The vertex of the parabola is where the function opens up or closes. The x coordinate can be determined by using the formula x = - b/2a. Using this formula, we find that x = - 4. Plug in - 4 for x and you'll find that the coordinates of the vertex are (-4,-18).