1. TODAY IN ALGEBRA 1…  Warm Up: Writing expressions  Learning Goal: 1.6 You will represent functions as rules and as tables  Independent Practice – NO A.T.

3. CHALLENGE PROBLEMS: Work in groups of 3-4 to work on the following two problems. Each group will be required to turn in a solutions before the end of class.

4. DEFINING PARTS OF A FUNCTION: Copy the following important VOCABULARY into your notebooks: FUNCTION: INPUT: OUTPUT: One input has exactly one output. (x), DOMAIN, independent variable (y), RANGE, dependent variable

5. EXAMPLE 1: Identify the DOMAIN and RANGE of the table. INPUT (x)0124 OUTPUT (y) 5278 DOMAIN RANGE EXAMPLE 2: Identify the DOMAIN and RANGE of the table. INPUT 0 5 10 15 OUTPUT 234234 DOMAIN RANGE *Notice!!! One OUTPUT can be paired with more than one INPUT. BUT one INPUT cannot be paired with more than one OUTPUT.

6. PRACTICE: Tell whether each pairing is a function. a. b. INPUT 0 5 10 OUTPUT 23452345 INPUTOUTPUT 00 12 48 612 NOT A FUNCTION One input is paired with more than one output. FUNCTION One input is paired with one output.

7. INPUT OUTPUT DOMAIN RANGE

8. INPUT OUTPUT DOMAIN RANGE

9. EXAMPLE 5: Write a rule for the function. INPUT OUTPUT

10. PRACTICE: Write a rule for the function. TIME (hours) PAY (dollars)

11. HOMEWORK #5: Pg. 38: 1-8, 12-14, 17, 25 REMINDER: turn in your Student Acknowledgment and Agreement Form! If finished, work on other assignments: HW #1: Pg. 5: 3-12, 15-28, 34 HW #2: Pg. 10: 3-6, 11, 14, 15, 18, 22-26 HW #3: Pg. 18: 3-12, 15-21 HW #4: Pg. 24: 3-8, 12-28