SOLUTION: When graphing a quadratic equation, how do you know if the graph will have a maximum or a minimum? How do you calculate the maximum/minimum?

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Question 550875: When graphing a quadratic equation, how do you know if the graph will have a maximum or a minimum? How do you calculate the maximum/minimum?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
When graphing a quadratic equation, how do you know if the graph will have a maximum or a minimum? How do you calculate the maximum/minimum?
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For ax%5E2+%2B+bx+%2B+c+=+0
If a > 0 it's a minimum.
If a < 0 it's a max.
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How do you calculate the maximum/minimum?
Find the Line of Symmetry.
LOS is x = -b/2a
The min/max is (-b/2a,f(-b/2a))