Question

Which of the following relations is a function?

A: {(0, 0), (0, 2), (0,5)}
B: {(2, 5), (2,0), (0,5)}
C: {(5, 2), (2, 5), (5, 0)}
D: {(0, 0), (2, 0), (5,0)}

Answer 1

D because there are none of the same domain factors
DOMAIN: {0, 2, 5}
RANGE: {0,0,0}