Determine whether the function is one-to-one. If it is one-to-one find an equation or a set of ordered pairs that defines the inverse function of the given function.f = {(0, 0), (1, 1), (-2, 9)}
A. not one-to-one
B. one-to-one; f-1 = {(0, 0), (1, -2), (9, 1)}
C. one-to-one; f-1 = {(0, 0), (1, 1), (9, -2)}
D. one-to-one; f-1 = 
Answer: C
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