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Agenda Lesson 4 – 4 Writing A Function Rule

Agenda Lesson 4 – 4 Writing A Function Rule. Warm up/Attendance Notes – Writing Function Rules Practice Review Notes – Applications Practice Review. Homework – Please do at home this weekend Pages 197/198 Problems 19 and 20 and 32 to 35 all. Warm Up.

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Agenda Lesson 4 – 4 Writing A Function Rule

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  1. Agenda Lesson 4 – 4 Writing A Function Rule Warm up/Attendance Notes – Writing Function Rules Practice Review Notes – Applications Practice Review Homework – Please do at home this weekend Pages 197/198 Problems 19 and 20 and 32 to 35 all

  2. Warm Up Find the range of each function for the domain { -4, 0, 3} 1. y = 3x + 5 • g(x) = 6 – 2x 3. f(x) = 4 – │x│ Homework – Please do at home this weekend Pages 197/198 Problems 19 and 20 and 32 to 35 all

  3. Writing a Rule from a table 1 EXAMPLE

  4. You try three: Write a function rule for the given tables

  5. Class work – Please do now Page 196 Problems 1 to 9 all Homework – Please do at home this weekend Pages 197/198 Problems 19 and 20 and 32 to 35 all

  6. 2 EXAMPLE Application The journalism class makes $25 per page of advertising in the yearbook. If the class sells P pages of advertising, how much money will it earn? a. Write a function rule Money Earned is 25 times the number of pages Money Earned = M Number of Pages = P M= 25P

  7. 2 EXAMPLE Application The journalism class makes $25 per page of advertising in the yearbook. If the class sells P pages of advertising, how much money will it earn? b. If they sold 6 pages how much did they make? M= 25P P = 6 M= 25(6) M= 150

  8. Class work – Please do now Page 196 Problems 10 to 16 all Homework – Please do at home this weekend Pages 197/198 Problems 19 and 20 and 32 to 35 all

  9. 3 EXAMPLE Application Suppose you borrow money from a relative to buy a bicycle that costs $375. You deliver papers and earn $12.50 each day. Write a rule to describe your profit P(d) as a function of the number of days d. Which equation best describes the situation? P(n) = 12.5n P(n) = 12.5n – 375 A C P(n) = 375 + 12.5n P(n) = 12.5 + 375 B D Total profit is $12.50 times days delivered minus cost of bike P(n) = 12.50n – 375

  10. Class work – Please do now Page 196/197 Problems 17, 18, 21, 22 and 23 Homework – Please do at home this weekend Pages 197/198 Problems 19 and 20 and 32 to 35 all

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