Question

Let f(x) = 5x + 12. Find f-1(x).

Answer 1

\[
x=5f^{-1}(x)+12
\]Now solve for \(f^{-1}(x)\)

Answer 2

@wio I have no idea how, but thankyouu !! I appreciate it

Answer 3

What math are you in?

Answer 4

Alg.2 , and math is my WORST subject

Answer 5

Okay so start buy subtracting both sides by \(12\).

Answer 6

\[
x-12=5f^{-1}(x)
\]

Answer 7

What do you think is the next step?

Answer 8

Divide by 5 ?

Answer 9

Yeah

Answer 10

@wio

Answer 11

Yes!

Answer 12

and from there I get the final answer?

Answer 13

Yep

Answer 14

so it would be x−12/5=f−1(x) ?

Answer 15

\[
f^{-1}(x) = \frac x5-\frac{12}5
\]

Answer 16

Thankyouuu ! :D

Answer 17

Remember that \[
f(f^{-1}(x)) = x
\]

Answer 18

I wrote it down, thankyou ! :]
@wio

Answer 19

Would the answer 1 over 5x+12 ? @wio

Answer 20

*be

Answer 21

We already got the answer.

Answer 22

x-12 over 5 Got it, thankyouu