This is a 32 page Smartboard file covering how to determine a function rule. The lesson starts with a definition for a function rule. Next it is shown that function rules can be found in a table and also in a function machine. The lesson shows how to first expect the function rule to be basic and if that doesn't pan out then go to the more complicated type. There is plenty of practice looking at a table and trying to determine a function rule. All practice pages include answers.