1. By Emily Keenan and Justin Ng
Functions
By Emily Keenan and Justin Ng

2. What are functions?
A function is a rule that gives you a output (y) from using the rule on the input (x).
A function is a relationship that assigns exactly one output value for each input value.

3. EXAMPLE: Rule- 2x x y 1 2 3 4 5 6 7 8 2 4 6 8 10 12 14 16

4. How to do Functions
To find the output (y) you follow the rule with the input(x). x
x+ 5 y 1 2 3
1+5
2+5
3+5 6 7 8 4
4+5 9 5
5+5 10
6+5 11

5. Rule=X - 3
X y -2 -1 1 2 3 1 2 3 4 5 6