Question

I have a new question to be answered :D
FInd the vertex of the graph of the following equation: y= x^2+8x-12.
A) (4,-28)
B) (-4,-28)
C) (-4,4)
D) (4,4)

Answer 1

change the given equation into vertex form by completing the square

Answer 2

https://www.khanacademy.org/math/algebra/quadratics/solving_graphing_quadratics/v/graphing-a-parabola-in-vertex-form

Answer 3

vertex form a(x-h)^2 + k
from general form ax^2 + bx + c= 0
h = -b/2a the x-coordinate of the vertex
k = f(x)

Answer 4

its either b or c

Answer 5

is it c?

Answer 6

When I graphed it on my graphing calculator I got -4, -28 as the vertex.

Answer 7

thank you so B is the correct answer xP