SOLUTION: without putting the parabola in vertex form, identify the vertex. is the vertex a maximum or minimum? A) f(x)=2x^2=8x=7 B) y=-x^2=6x-8

Question 776015: without putting the parabola in vertex form, identify the vertex. is the vertex a maximum or minimum? A) f(x)=2x^2=8x=7 B) y=-x^2=6x-8
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
without putting the parabola in vertex form, identify the vertex. is the vertex a maximum or minimum?
The vertex occurs where x = -b/(2a)
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A) f(x)=2x^2+8x+7
x = -8/(-4) = 2
f(2) = 4+16+7 = 27
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B) y=-x^2+6x-8
x = -b/(2a)=-6/(-2) = 3
f(3) = -9+12-8 = -5
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Cheers,
Stan H.
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