Question

Which of the following relations is a function?
A.
{(8,3),(8,0),(-8,13),(-8,17)}
B.
{(6,11),(-8,7),(6,4),(9,5)}
C.
{(-12,1),(4,9),(-12,8),(-4,15)}
D.
{(5,9),(-7,3),(-5,11),(7,9)}​

Answer 1

Answer:

D

Step-by-step explanation:

Because in D, there no x-value that are repeating in the list.

For example A, the value 8 and -8 are being repeated twice, which makes this relation not a fuction.