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
Algebra ->
Finance
-> 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
Log On
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)
------------------------------------------------
A) f(x)=2x^2+8x+7
x = -8/(-4) = 2
f(2) = 4+16+7 = 27
-----------------------
B) y=-x^2+6x-8
x = -b/(2a)=-6/(-2) = 3
f(3) = -9+12-8 = -5
==============
Cheers,
Stan H.
---------------------------------
(