Final answer:
The function f={(9,7), (7,9), (6,7)} is a one-to-one function, and the inverse function is f^{-1}={(7,9), (9,7), (7,6)}.
Step-by-step explanation:
To determine whether the function f={(9,7), (7,9), (6,7)} is a one-to-one function, we must check if each input (first component of each ordered pair) maps to exactly one unique output (second component of each ordered pair). In this case, the function does map each input to a unique output, therefore the function is one-to-one.
Next, finding the inverse of the function involves swapping the inputs and outputs. This means flipping each pair: the first component becomes the second, and the second component becomes the first. Therefore, the inverse function is f-1={(7,9), (9,7), (7,6)}.