Answer: A
Sustitute one of the inputs into all of the equations and see if you get the respective output. I will use the point (0,2).
A. f(0)=8(0)+2
f(0)=2
Option A works!
B. f(0)=8(0)-2
f(0)=-2
Option B doesn’t work.
C. f(0)=8(0)
f(0)=0
Option C doesn’t work.
Since option A is the only one that works, the correct function is A.
:)
