SOLUTION: Hi, can you please help me get through this algebra graph?? Graph f(x)= x^2+2x-6 Find the vertex, write as a coordinate, find line of symmetry, max or min? Thanks

Algebra ->  Graphs -> SOLUTION: Hi, can you please help me get through this algebra graph?? Graph f(x)= x^2+2x-6 Find the vertex, write as a coordinate, find line of symmetry, max or min? Thanks      Log On


   

Question 208689: Hi, can you please help me get through this algebra graph??
Graph f(x)= x^2+2x-6
Find the vertex, write as a coordinate, find line of symmetry, max or min?
Thanks
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Graph f(x)= x^2+2x-6
Find the vertex, write as a coordinate, find line of symmetry, max or min?
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Since the coefficient of x^2 is positive you have a max.
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Vertex:
The vertex occurs where x = -b/2a = -2/2 = -1
f(-1) = (-1)^2 +2*-1-6 = 1-2-6 = -7
Vertex is (-1,-7)
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Axis of symmetry passes thru the vertex and is vertical
So axis is x = -1
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Graph:
graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B2x-6%29
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Cheers,
Stan H.
PS: Reply to stanbon@comcast.net because the algebra.com
feedback program is not working.
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