Question

Which set of ordered pairs does NOT represent a function?
The set of the ordered pairs one comma negative two, three comma negative four, five comma negative six, and seven comma negative eight.
The set of the ordered pairs two point three comma four point nine, three point five comma eight point two, four point seven comma four point nine, and five point nine comma six point five.

The set of the ordered pairs six comma thirteen, four comma sixteen, two comma nineteen, and zero comma zero.
The set of the ordered pairs negative forty-one comma negative eight, negative thirty-one comma