1. 1.7 Functions
Objective: Students should be able to identify what the domain and range of a function are. They should know how to determine if something is a function. Finally, students should be able to construct an input/output table and then transfer that into a line graph.

2. Notes Function: relationship between two quantities. Input: domain, x
Input has ONLY one output
Output: range, y
Output can have many inputs.
Functions shown by input / output table.

3. Identifying functions
Input
Output 2 10 4 12 6 8
Is the table a function?
Why or why not?

4. Identify functions
Input
Output 9 8 7 6
Input
Output 1 2 3 4

5. Make an input output table. Use 0,1,2,3 as domains
Y = 2x + 5
Y = 4x

6. Make an input output table. Use 0,1,2,3 as domains
Y = 15 - x
Y = x + 18

7. Function tables and graphing
You are at an altitude of 250ft. In a balloon. You turn the burners on and rise 20 feet per minute for 5 minutes. The function is represented below
H = t
Calculate the input output
Create a table
Graph the table
Identify the domains.

8. Word Problem - ST
You join an aerobics class. The cost is $3 per class plus and initial fee of $10.
Write equation shows relationship between number of classes N and amount you pay P.
Evaluate equation if n = 1,2,5,8, and 10. organize in input/output table.
Display as line graph

9. Wrap up Questions/Comments IC: work on hw
Hw: text pg #’s: 1-6, 10-18, 28, 44