#### Answer

The pairs {(1,3), (3,5), (7,5)} is a function but the inverse {(3,1),(5,3),(5,7)} is not a function.

#### Work Step by Step

The pairs {(1,3), (3,5), (7,5)} is a function because it passes the vertical line as one x coordinative has only one y value. But the inverse of the ordered pairs which is {(3,1),(5,3),(5,7)} is not a function because it does not pass the vertical line test as one x coordinate has 2 y values.