Question

NEED HELP WITH A ONE TO ONE FUNCTION PROBLEM(PIC INSERTED)

Answer 1

OK ! The second question is very easy.
If you have a function f which has an inverse function :
\[f^{-1}\]
Then :
\[f\circ f^{-1}(x)=x\\
f^{-1}\circ f(x)=x\]

Answer 2

i still dont get it

Answer 3

i found the first one, i got 9

Answer 4

@Noura11

Answer 5

I was talking about the second not solved question which is the 3rd question :)

Answer 6

im lost

Answer 7

someone plz help me lol

Answer 8

@NoelGreco

Answer 9

@idreamofpink My 1st reply above is answering the 3rd question !

Answer 10

ohhhh okay

Answer 11

wait what is the actual answer

Answer 12

Good!
Now for finding
\[h^{-1}\]
We write :
\[h(y)=x\]
and we try to find the expression of y.
So :
\[h(y)=x \iff 8y-13=x\iff 8y=x+13\iff y=\frac{x+13}{8}\]
So :
\[h^{-1}(x)=\frac{x+13}{8}\]