The inverse of a function is given by \(f^{-1} : x \to \frac{x + 1}{4}\).
Answer Details
To find the original function from its inverse, we can simply swap the roles of x and y in the equation for the inverse and then solve for y.
Starting with the given inverse function:
\[f^{-1} : x \to \frac{x + 1}{4}\]
Swapping x and y:
\[x = \frac{y + 1}{4}\]
Solving for y:
\[y+1 = 4x\]
\[y = 4x - 1\]
Therefore, the original function is:
\[f : x \to 4x - 1\]
So the correct answer is.