Question

true false? If F = {(2, 5), (3, 2) (4, 6), (5, 1), (7, 2)}, then F is a function.

Answer 1

No because the 3 and 7 both map to the same value.

Answer 2

true
A many-to-one function

Answer 3

Oh yeah, I got it the wrong way round. My bad.

Answer 4

If there were two values that mapped to a single value then it wouldn't be a function.

Answer 5

Definition of Function. A function is a relation in which no two ordered pairs have the same first component and a different second component.

Answer 6

From the above definition from Larson/Hostetler text book, then it appears to be a function ie. true