Question

Which of the following sets represents a function?

{( one,one), (two comma one), (three comma one), ( four comma one)}

{( one comma one), (one comma two), ( one comma three), (one comma four)}

{( one comma one), ( two comma one), ( two comma one), ( three comma one)}

{( two comma one), ( two comma two), ( three comma two), ( four comma two)}

Answer 1

It would be B because for it to be a function they cannot have the same range

Explanation:

Answer 2

{(1, 120), (2, 100), (3, 150), (4, 130)}. The set of all first elements is called the domain of the relation. The domain of W = {1, 2, 3, 4}.