SOLUTION: 1. Which relation is a function?
(Points : 4)
{(1, 2); (2, 3); (3, 4); (1, 5)}
{(1, 2); (1, 3); (1, 4); (1, 5)}
{(1, 2); (2, 3); (3, 4); (2, 5)}
Algebra.Com
Question 718905: 1. Which relation is a function?
(Points : 4)
{(1, 2); (2, 3); (3, 4); (1, 5)}
{(1, 2); (1, 3); (1, 4); (1, 5)}
{(1, 2); (2, 3); (3, 4); (2, 5)}
{(1, 2); (2, 2); (3, 2); (4, 2)}
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
A relation where you have an 
value that maps to two or more 
values is NOT a function.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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