Question

Determine which relation is a function.
A. {(–3, 2), (–2, 3), (–1, 2), (0, 4), (1, 1)}
B. {(–3, 2), (–2, 3), (–1, 1), (0, 4), (0, 1)}
C. {(–3, 2), (–1, 3), (–1, 2), (0, 4), (1, 1)}
D. {(–3, 3), (–2, 3), (–1, 1), (0, 4), (0, 1)}

Answer 1

Well in order for a relation to be a function there must be no repeating numbers in the domain

Answer 2

A is correct because it is the only function with no repeating domain numbers

Answer 3

do you understand?

Answer 4

Oh okay I was thinking it was A thanks!