The set of possible values of m is {5,7,9}.what is the set of possible values of k if 2k=m+3?

Okay
Im pretty sure the possible values of K are {1,2,3}

2K=m+3 
Subtract 3 from {5,7,9} -> {2,4,6}
{2,4,6} / 2 = {1,2,3}
Therefore the possible values of K are {1,2,3}(?)

Where are the functions?

Sorry i really need my points