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Functions

Functions. Animals. An armadillo sleeps 19 hours each day. Complete a function table and write an equation using two variables to show the relationship between the number of hours h an armadillo sleeps in d days. Answer. Equation. h = 19d. Botanist.

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Functions

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  1. Functions

  2. Animals An armadillo sleeps 19 hours each day. Complete a function table and write an equation using two variables to show the relationship between the number of hours h an armadillo sleeps in d days.

  3. Answer

  4. Equation h= 19d

  5. Botanist A botanist discovers that a certain species of bamboo grows 4 inches each hour. A. Write an equation using two variables to show the relationship between the growth g in inches of this bamboo plant in h hours. B. Use your equation to explain how to find the growth in inches of this species of bamboo after 6 hours.

  6. Answers A. g = 4h B. 24 inches

  7. A pizza shop sells 25 pizzas each hour. At the same rate, find the number of pizza sold after 1, 2, 3, and 4 hours. Make a function table. Write an equation using two variables to show the relationship between the number of hours h and p the number of pizzas sold. Pizza

  8. Answers

  9. Equation p= 25 h

  10. Typing • Suppose you can type 60 words per minute. What is the total number of words typed after 5, 10, 15, and 20 minutes. • Make a function table. • Write an equation using two variables to show the relationship between the number of words typed w and m minutes.

  11. Function Table

  12. Equation w= 60m

  13. Cell Phones • Verizon charges a customer $40 for each month of service. • Write an equation using two variables to show the relationship between the total amount charged c after m months of service. • Use the equation to EXPLAIN how to find the total cost for 6 months of cell phone service.

  14. Answers c = 40m $240 – Substitute m with 6 in the equation c = 40m.

  15. Running • The average marathon running speed is 5.5 miles per hour. Find the number of miles run after 1, 2, 3, and 4 hours at this rate. • Make a function table to show the number of miles after 1, 2, 3, and 4 hours. • Write an equation using two variables to show the relationship between the number of miles m and the h hours.

  16. Function Table

  17. Equation m = 5.5h

  18. Exit Ticket 1. The function rule is only true if . . 2. How do you know if a relation is a function?

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