SOLUTION: Decide whether the relation is a function. {(1, -9), (3, 7), (4, -2), (8, -2), (11, 4)}

Question 899892: Decide whether the relation is a function.
{(1, -9), (3, 7), (4, -2), (8, -2), (11, 4)}
Found 3 solutions by ewatrrr, richwmiller, MathLover1:
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!

{(1, -9), (3, 7), (4, -2), (8, -2), (11, 4)}
Ordered pairs(x,y)(4, -2), (8, -2), , 4 and 8 have same y-values.
relation a function? NO
Answer by richwmiller(17219)   (Show Source): You can put this solution on YOUR website!
Not a function
Two different x's yield the same y
(4, -2), (8, -2)

Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
A function is a special type of relation.
If for value that is the in an ordered
pair, there is one value that is the ()
value () in any of the ordered pairs, then the
relation is a FUNCTION. Or, a function is only if for every there is only ONE . But if different values have the same value, it's still a .

you have {(, ), (, ), (, ), (, ), (, )}
since in pairs (, ) and (, ), values and have same value , it a FUNCTION because if different values have the same value, it's still a

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