Determine which relation is a function.

A.
{(–3, 2), (–2, 3), (–1, 1), (0, 4), (0, 1)}

B.
{(–3, 3), (–2, 3), (–1, 1), (0, 4), (0, 1)}

C.
{(–3, 2), (–1, 3), (–1, 2), (0, 4), (1, 1)}

D.
{(–3, 2), (–2, 3), (–1, 2), (0, 4), (1, 1)}

Question

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

kc_kennylau · Answer

If one x-value (first term in a pair) corresponds to two y-values, then that relation isn't a function.

anonymous · Answer

D.

kc_kennylau · Answer

For example, in C, the x-value (-1) can correspond to (3) and (2), which make it not a function.

anonymous · Answer

SO the answer would be D. right?