SOLUTION: I am to find the vertex, the line of symmetry, as well as the maximum or minumum value of f(x). Graph the function. I am sorry but I just am not comprehending how to do this. I ha

Algebra ->  Algebra  -> Quadratic Equations and Parabolas -> SOLUTION: I am to find the vertex, the line of symmetry, as well as the maximum or minumum value of f(x). Graph the function. I am sorry but I just am not comprehending how to do this. I ha      Log On

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Question 633082: I am to find the vertex, the line of symmetry, as well as the maximum or minumum value of f(x). Graph the function.
I am sorry but I just am not comprehending how to do this. I have looked at problems in the book, on here and as sad as it sounds I just am comprehending it. Please help me
f(x)= -(x+1)^2-9
Answer by reviewermath(507) About Me  (Show Source):
You can put this solution on YOUR website!
The vertex of the quadratic function y+=+a%28x-h%29%5E2+%2B+k+is (h,k).
The line of symmetry is x+=+h and the maximum or minimum value is k.
Therefore, in f%28x%29+=+-%28x%2B1%29%5E2-9, the vertex is (-1,-9).
The line of symmetry is highlight%28x+=+-1%29 and the maximum value is highlight%28-9%29.
The graph has a maximum value because a < 0.
here's the graph: