Question

50 points please help i need it so bad

Answer 1

D

Explanation:

Recall that for a function
`f` such that
`f:X \to Y`, where
`X` is the Domain and
`Y` is the Codomain, the function has a inverse, if and only if,
`\forall y \in Y` exist an unique
`x\in X` such that
`f(x)=y`.

`\therefore f^(-1)(y)=x \iff f(x)=y`

Therefore, the inverse of
`f` for
`f(x)=(3-x)/(7)` is

`f^(-1) =3-7x`

==============================================

`f(x)=(3-x)/(7) \implies y= (3-x)/(7) \implies x=(3-y)/(7)`

`x=(3-y)/(7) \implies 7x = 3-y \implies 7x -3 = -y \implies -7x +3 = y \implies f(x)=3-7x`