SOLUTION: I have one more question I couldn't figure out. Thanks for the help, your a life saver! Thanks Find the maximum or minimum value of y=(x+9)(x-9) and determine for which value o

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Question 73164: I have one more question I couldn't figure out. Thanks for the help, your a life saver! Thanks
Find the maximum or minimum value of y=(x+9)(x-9) and determine for which value of x it occurs
Bunches and bunches of thanks
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Find the maximum or minimum value of y=(x+9)(x-9) and determine for which value of x it occurs
:
Just think about it. You know that the parabola crosses the x axis(y=0) at + 9 and
-9. The vertex will be half-way between these two points, Halfway between +9 and -9 is 0, right? So the value of x that the minimum occurs is 0