Hey there!
The equation for axis of symmetry is [tex]\frac{-b}{2a}[/tex]
The A, B, and C are:
Ax+By+C= f(x)
A=4 B=-8 C=12
So we have:
[tex]\frac{-(-8)}{2(4)}[/tex]
Two negatives make a positive.
[tex]\frac{8}{8}[/tex]
8/8= 1
x=1 is the correct answer.
I hope this helps!
kaikers