Interpreting Functions

1. Interpreting Functions Problem of the day

2. Problem of the Day Day # 1

3. DIRECTIONS Evaluate the following situations and determine which option is the best. Write a complete sentence stating the ‘best’ option and mathematically defend your rational.

4. Type # 1 Writing (prediction) Writing Frame: I think that store _____ costs less per t-shirt because…

5. Which store charges less per shirt? Store A Store B Y = 5x + 50

6. Type # 2 Writing Writing Frame: I think that store _____ costs less per t-shirt because…

7. Which company charges less per pen? Company A Company B Y = 3x + 1

8. Problem of the Day Day # 2

9. DIRECTIONS Evaluate the following situations and determine which option is the best. Write a complete sentence stating the ‘best’ option and mathematically defend your rational.

10. Type # 1 Writing (prediction) Writing Frame: I think that store _____ costs less per t-shirt because…

11. Which store charges less per shirt? Store A Store B Y = 7x + 25

12. Type # 2 Writing Writing Frame: I think that store _____ costs less per t-shirt because…

13. Which company charges less per month for a phone? Verizon US Cellular Y = 10x + 15

14. How old are the lobsters?

15. Write an Equation A lobster’s age in years is approximately his weight multiplied by 4, plus 3 years. • Write this rule of thumb as a linear equation.

16. Apply the Equation • Use your equation to determine the age of a 5 pound lobster. • How much will a 15-year-old lobster weigh?

17. Problem of the Day Day # 3

18. DIRECTIONS Evaluate the following situations and determine which option is the best. Write a complete sentence stating the ‘best’ option and mathematically defend your rational.

19. Type # 2 Writing Writing Frame: Based on the information, person ___ deposits more money into their bank account each week. I can mathematically prove it because…

20. Who is depositing more money into their bank account each week? Person 1 Person 2 Y = 5x + 50

21. Type # 2 Writing Writing Frame: Based on the information, person ___ deposits less money into their bank account each week. I can mathematically prove it because…

22. Who is depositing less money into their bank account each week? Person 1 Person 2 Y = 10x + 50

23. Problem of the Day Day # 4

24. How much do they make per pie?

25. Write an Equation Mrs. Roberts has a bakery. To figure out approximately what her daily sales were, she multiplies the number of pies sold by $8 then adds $20 for a commission fee. • Write a linear equation to match this situation.

26. Apply the Equation • Use your equation to determine the sales for the day if 12 pies were sold. • How many pies were sold if she made $140 for the day?

27. DIRECTIONS Evaluate the following situations and determine which option is the best. Write a complete sentence stating the ‘best’ option and mathematically defend your rational.

28. Type # 2 Writing Writing Frame: Based on the information, brand ___ is a better buy for apples because…

29. Which brand of apples would be a better buy? Brand A Brand B Y = 4x

30. Problem of the Day Day # 5

31. DIRECTIONS Evaluate the following situations and determine which option is the best. Write a complete sentence stating the ‘best’ option and mathematically defend your rational.

32. Type # 2 Writing Writing Frame: Based on the information, brand ___ is a better buy for juice because…

33. Which brand of juice would be a better buy? Brand A Brand B Y = 3x

34. Type # 2 Writing Writing Frame: Based on the information, person ___ is depositing more money into their account each week. This is evident because…

35. Which person is depositing more money into their account each week? Person 1 Person 2 Y = 7x + 50

36. Problem of the Day Day # 6

37. Type # 2 Writing Writing Frame: Based on the information, option ___ charges less per month. This is evident because…

38. Which cellular company charges less per month? Option 1 Option 2 Y = 10x + 25

39. Linear Relationship When looking at an equation, how can you determine if it is linear? When looking at table, how can you determine if it is linear?

40. Write an equation: Marvin sold magazine subscriptions part time. He earned $125 a week plus $5 for each subscription sold. Write an equation that represents the this situation.

41. Problem of the Day Day # 7

42. How much is the cell phone?

43. Write an Equation Mrs. Romick needs to figure out approximately how much her new cell phone will cost her for any given amount of months. She multiplies the number of months by $60 then adds $149 for the purchase of the phone. • Write a linear equation to match this situation.

44. Apply the Equation • Use your equation to determine the cost if she has the phone for 24 months. • How many months can she keep the phone if she had $750?

45. Problem of the Day Day # 8

46. Who Puts More Money into Their Bank Account? Person 1 Person 2 Y = 13 + 12x

47. Writing Frame: Based on the information, person ___ is putting more money into their bank account every week. This is evident because…

48. Problem of the Day Day # 9

49. Write an Equation for the Situation. Molly loves flowers. She gets two flowers each week. She already has 5 flowers in her vase at home. • Write a linear equation to match this situation.

50. Write an Equation Mr. Luck has a bakery. To figure out approximately what his daily sales were, he multiplies the number of donuts sold by $1.25 then adds $5 for a commission fee. • Write a linear equation to match this situation.