What is a function table? : What is a function table? Like an input/output table or machine
A rule is repeated in the table
From the table, you can determine how each input will be changed to produce each output
A Well-Oiled Machine : A Well-Oiled Machine Input: the numbers that are going into the “machine”; represented by “X”
Output: the numbers after they have gone through the “machine”; represented by “Y”
What has happened to all of the numbers as they have gone through the “machine”?
The operation(s) that changed the numbers is the FUNCTION TABLE RULE. The rule: Add 2 to the input
Follow the rule! : Follow the rule! If the rule is given, simply follow it to change inputs to outputs
The rule is 4x=y
Multiply each input by 4 to get the output
Follow the rule! : Follow the rule!
Do I have a rule? : Do I have a rule? Start with the first input to output
Which operation is used?
Check all the inputs to outputs to make sure the rule works for all
Is the rule x+5=y?
No, because it only works for the first set of inputs and outputs
The rule is 2x+3=y