Question

Find the inverse of the given function. f(x) = 7x – 4​

Answer 1

Hi there!

`\large\boxed{y = (x + 4)/(7)}`

f(x) = 7x - 4

Rewrite f(x) with y:

y = 7x - 4

Swap the x and y variables:

x = 7y - 4

Solve for y:

x + 4 = 7y

y = (x + 4)/7