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):
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
|
|
|
