Find the inverse function?

Question

f(x)=7x+42

Answer 1

f^{-1}(y) = (y-42) / 7
s

Answer 2

To find the inverse of just about any function, swap the X and Y then solve for Y.

So you start with X = 7Y+42
-7Y + X = 42
-7Y = -X + 42
Y = x/7 - 6

Answer 3

f-1(x) = (x-42)/7

Answer 4

(y-42)/7

Answer 5

f(x) = 7x + 42

x = 7(f(x)^-1) + 42
x - 42 = 7(f(x)^-1)
f(x)^-1 = (1/7)x - 6

ANS :

f(x)^-1 = (1/7)x - 6