Question

find m and b in f(x)=mx+b such that f(2)=2 and f(-2)= -2.
I am stumped!!!

Answer 1

f(x)=mx +b
f(2)=2m + b
2m+ b=2 ........1

f(-2)=-2m+b
-2m+b=-2.......2
from 1 and 2
b=0
m=1