Question

If f(x)= 3x - 8, find f^-1(x)
For example: (3x-2)/5

Answer 1

Explanation:

given

f(x) = 3x - 8

f^-1(x) = ?

Let

y = f(x)

y = 3x - 8

Interchanging the roles of x and y we get

x = 3y - 8

x + 8 = 3y

y = ( x + 8) / 3

f^-1(x) = ( x + 8 ) / 3

Hope it will help :)❤