Question

If f(x) = 3x + n, where n is a constant, and f(3) =0 then f(n) equals?

Answer 1

f(x) =3x + n

f(3) = 3(3)+n

= 9 + n

n = -9

f(-9) = 3(-9)+(-9)

= -27 - 9

= -36.......

hope it help you.....