SOLUTION: How do I figure out whether or not the vertex of {{{ y= -99(x-7)^2 - 2 }}} is a minimum value? Any sort of help with this problem would be appreciated.

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Question 6588: How do I figure out whether or not the vertex of +y=+-99%28x-7%29%5E2+-+2+ is a minimum value? Any sort of help with this problem would be appreciated.
Answer by Earlsdon(6103) About Me  (Show Source):
You can put this solution on YOUR website!
Take a look at the coefficient of the x^2 term. Notice that it is negative: This indicates that the parabola opens downward, therefore, the vertex must be a maximum.
The equation is in the form:
y+=+a%28x-h%29%5E2+%2B+k
The vertex is located at (h, k) or at ( 7, -2)