If f(x) is a linear function, f(-4)= 0, and f(4) = 4 find an equation for f(x)

Question

Any help would greatly be appreciated.

Answer 1

y= x/2 + 2

4=4/2 + 2

0 = -4/2 + 2

Answer 2

Not a calculus question. Use two-point form from Algebra 1.

(y - 0) / (x + 4) = (4 - 0) / (4 + 4)