Question

BRAINLIEST,
PLZ HELP

the function f(x) is given by
f(x)= 3x-1

find it's simplest form
a. f^-1 f(x)
b.ff(x)​

Answer 1

f(x) = 3x - 1

a) let y = f(x)

y = 3x - 1

solve for x

3x = y + 1

x = (y+1) / 3

interchange x's and y's

y = (x+1) / 3

f inverse = (x+1) / 3

b) f inverse of f(x) = (3x-1+1) / 3

f inverse of f(x) = 3x / 3

f inverse of f(x) = x