Question

16. If f x = 3x + 4, find f-1 x . A. f-1(x) = 4x – 3 B. F-1(x) =x-4/3C. f-1(x) = x-3/4D. f-1(x) = -3 - 4x

Answer 1

To find the inverse function change all ys' for xs' to find the new inverse function

`y=3x+4`

interchange the letters

`x=3y+4`

clear the equation for y

`x-4=3y`
`y=(x-4)/(3)`