Sunday, June 30, 2013

What is the maximum y value for f(x)= -x^2+8x+9

Vertex Formula: 
x%5Bmax%5D=-b%2F%282a%29=%28-8%29%2F%282%28-1%29%29=4 

y%5Bmax%5D=-%284%29%5E2%2B8%284%29%2B9=25%0D%0A
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