Question

Given f (x) = 5x + 6 on the domain of all real numbers, find f ^-1(x). Be sure to write your answer as a function of x. Would it be -6/5?

Answer 1

(x-6)/5 ?

Answer 2

because the computer marked my answer wrong and I don't know what I did wrong

Answer 3

Yes. \(f^{-1}(x) = (x-6)/5\)

Answer 4

ok thanks. It's probably because I didn't originally include the parantheses.

Answer 5

Without the parenthesis it would be wrong because only 6 will be divide by 5 instead of (x-5).