Question

how do i find the inverse of the function and state it's domain and range?
{(13,1),(11,2), (9,3), (7,4)}

Answer 1

recall that an inverse function has the domain, range pairs backwards FROM the original function
\(\begin{array}{llll}
\qquad \qquad \textit{(domain,range) pairs}\\
f(x)\ \ \ \qquad {(13,1),(11,2), (9,3), (7,4)}\\ \quad \\
f^{-1}(x)\qquad {(1,13),(2,11),(3,9),(4,7)}
\end{array}\)