SOLUTION: I am confused. o.k. the problem is xsquared+7x+9=0 i do not get how to find the vertex . i know it has to do with the it being max or miminmum . right ? Thanks for the help !! -

Question 143293: I am confused. o.k. the problem is xsquared+7x+9=0 i do not get how to find the vertex . i know it has to do with the it being max or miminmum . right ?
Thanks for the help !!
- confused

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I am confused. o.k. the problem is x^2+7x+9=y i do not get how to find the vertex . i know it has to do with it being max or miminmum . right ?
---------------------
You have a quadratic with a=1 and b=7
The vertex occurs when x= -b/2a = -7/2
The y value when x=-7/2 = (-7/2)^2+7(-7/2)+9 = -13/4
---------------
The vertex is at (-7/2 , -13/4)
=================================
Cheers,
Stan H.
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