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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.

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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.

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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

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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.

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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.

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INPUT OUTPUT DOMAIN RANGE

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INPUT OUTPUT DOMAIN RANGE

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

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

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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

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