SOLUTION: The question is: "Tell whether the relation is a function Input Output 3--------> -1 \_________>>>>>>>(There's an arrow from 3 to -5) 2--------> -5 5-------

Question 12541: The question is:
"Tell whether the relation is a function
Input Output
3--------> -1
\_________>>>>>>>(There's an arrow from 3 to -5)
2--------> -5
5--------> 5
4--------> 6"

I just do not comprehend this whole concept.
Can you help? Thank you!!
Answer by AdolphousC(70) (Show Source): You can put this solution on YOUR website!
A relation is nothing more than a set of ordered pairs.

A function is a set of ordered pairs with unique ( non-repeating ) X or Input Values.

So to solve this question make a list of ordered pairs using your arrows, the ordered pairs are

(3, -1), (3, -5), (2, -5), (5, 5), (4, 6)

Now to tell weather this is a function or not, look at JUST the X values, if any of those X values repeat, that Relation is NOT a function, so since there are two 3's in the first and second ordered pair, that relation is NOT a function.
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