1. Functions Algebra

2. Functions Definitions Relation – a set of coordinate points (x, y) Domain – the x-values, input Range – the y-values, output Function – a relation where for every value of the domain the is exactly one value of the range

3. Functions Domain (Student’s Name) Range ( Student’s Grade) Roscoe Julia Dan Felicity Lucas ABCABC

4. Functions Graph the “grade” function Student’s Name Grade

5. Functions Domain (gallons used) Range (miles traveled) 2 5 7 10 13 36 90 116 180 234

6. Functions Graph the “mileage” function Write the equation that represents the data

7. Functions What does the graph of a function look like? What does it NOT look like? Give examples of graphs that are functions. Give examples of graphs that are NOT functions.

8. Functions Vertical Line Test (VLT) What is the definition if the VLT? How and why is it used?