Question

Find the inverse of function f.
f(x) = 1/3 - 1/21x

Answer 1

Answer:f⁻ (x) = 7 - 21 x.

We can also write it as:

y = 1/3 - 1/21 x

1 / 21 x = 1 / 3 - y

x = 7 - 21