Question

Help y = -2x^2 - 12x + 1

Answer 1

What are the instructions?

Answer 2

Identify the vertex for the graph of y = -2x^2 - 12x +1

Answer 3

Do you know how to begin in finding the vertex?

Answer 4

nope

Answer 5

im really bad at algebra so that is why i need help

Answer 6

I doubt you know derivatives? xD

Answer 7

I was looking forward to solve a Quad equation......

Answer 8

lol luigi i have no clue what that is

Answer 9

The x coordinate of the vertex is:
\[x=\frac{-b}{2a}\]

Answer 10

After you find that, plug the answer into your equation and find y.

Answer 11

You may want to get the answer by completing square.
y = -2x^2 - 12x + 1
= -2 (x^2 + 6x ) + 1
= -2 [x^2 + 6x + (6/2)^2- (6/2)^2] + 1
= -2 (x^2 + 6x + 9 - 9) +1
= -2 (x^2 + 6x + 9 ) - 9(-2) + 1
= -2 (x^2 + 6x + 9 ) + 19
Then, reduce it into the form of y=a(x-h)^2+k
The vertex is at (h,k)

Answer 12

so the answer is -3,19