Answer
f has an inverse
$f^{-1}(1)$ = 4
$f^{-1}(3)$ = 5
Work Step by Step
f passes the horizontal line test
Find the coordinates where the y values are 1 and 3
(4, 1) and (5, 3)
f(4) = 1
f(5) = 3
Interchange the x and y values
$f^{-1}(1)$ = 4
$f^{-1}(3)$ = 5
