find the coordinates of the vertex of the curve...

Apr 2010
15
0
State the coordinates of the verex of the curve

\(\displaystyle y=x^2+8x+15\)

I have completed the square:

\(\displaystyle y=(x+4)^2-1\)

I dont understand what the question is asking for or how i can find it though, please explain.
Thanks
 

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MHF Helper
Jan 2008
2,550
1,187
Big Stone Gap, Virginia
State the coordinates of the verex of the curve

\(\displaystyle y=x^2+8x+15\)

I have completed the square:

\(\displaystyle y=(x+4)^2-1\)

I dont understand what the question is asking for or how i can find it though, please explain.
Thanks
Hi George321,

You have just put the general quadratic into vertex form:

\(\displaystyle y=a(x-h)^2+k\)

in which (h, k) happens to be the vertex.