SOLUTION: 7. 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)

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: 7. 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)      Log On


   

Question 792016: 7. 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 by waynest(281) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + 8x - 12
x^2 + 8x + (8/2)^2 - (8/2)^2 -12
x^2 + 8x + 16 -16 - 12
(x + 4)^2 - 28
vertex is (-4, -28)