Answer:
No it is not a function.
Step-by-step explanation:
No it is not a function.
If we view "Domain" as the input values and "Range" as the output values, by definition, a function is only valid if each input gives one and only one unique value for the output.
In this case, for a Domain (input) of value 12, you get a whole bunch of output possibilities, 1, 2, 5, 7. Hence by definition this is not a function.
