Let S be the set of ordered pairs below. { ( − 5 , 0 ) , ( − 8 , − 2 ) , ( 3 , 0 ) , ( 1 , − 2 ) } Justify whether S represents a function or not. S is not a function because the x-values are not in increasing order. S is not a function because some y-values are repeated. S is a function because no x-values are repeated. S is a function because the range is smaller than the domain.