Question

Find vertex of x and y coordinate:
f(x)=-2x^2+2x+3

Answer 1

Do you mean find the x and y coordinates of the vertex?

Answer 2

yes sorry

Answer 3

\[x=\frac{-b}{2a}=\frac{-2}{4}=\frac{-1}{2}\]

Answer 4

Now plug -1/2 into the equation and find f(x). You will have your vertex.

Answer 5

\[2(\frac{-1}{2})^2+2(\frac{-1}{2})+3=\frac{1}{2}-1+3=\frac{5}{2}\]

Answer 6

Vertex is (-1/2,5/2)

Answer 7

Wouldn't it be 1/2 and not negative?

Answer 8

Oh gees. Yes. I didn't see the negative sign in front of the 4. You'll have to recalculate. Sorry

Answer 9

in front of the 2.

Answer 10

No problem you have been a great help!

Answer 11

ty