If (9,33) is an ordered pair of the inverse of f (x) which of the following is an ordered pair of the function f (x)

The answer:

the main formula for finding the value of an ordered pair of the inverse of a function f (x) is as following:

if (x, f (x)) is an ordered pair, so the ordered pair of the inverse of f (x) is (x', y') such that x'=f (x) and y'=x,

therefore, If (9,33) is an ordered pair of the inverse of f (x), the ordered pair of the function f (x) is (33, 9)