Answer:
See below.
Explanation:
An inverse function has the x and y coordinates switched. For example, if a function has point (1, 3), then the inverse function has point (3, 1).
Let's find the ordered pairs of the inverse function. We take all the ordered pairs of the original function:
(1, 3), (7, 4), (8, 6), (9, y)
Now we switch x and y in each ordered pair to come up with the inverse function.
The inverse function has these ordered pairs:
(3, 1), (4, 7), (6, 8), (y, 9)
For a relation to be a function, a value used as an x-coordinate can appear only once.
The last ordered pair is (y, 9). For the inverse relation to be a function, y cannot be 3, 4, or 6.