2. EOQ REVIEW #2

3. Hoops Relations Direct Variation Rate of Change Linear Equations Scatter Plots Q 1 pt. Q 2 pt. Q 3 pt. Q 4 pt. Q 5 pt. Q 1 pt. Q 2 pt. Q 3 pt. Q 4 pt. Q 5 pt. Buzzer Shot

4. Hoops Relations Direct Variation Rate of Change Linear Equations Scatter Plots Q 1 pt. Q 2 pt. Q 3 pt. Q 4 pt. Q 5 pt. Q 1 pt. Q 2 pt. Q 3 pt. Q 4 pt. Q 5 pt. Buzzer Shot

5. 1 pt. Question from Relations Describe the purpose of the vertical-line test and how you do the test.

6. 1pt. Answer from Relations You take a vertical line and make sure it only touches the line once at all times. If it touches twice, it is not a function.

7. 2 pt. Question from Relations Evaluate f(n) = -3n-10 for n=-6 a.-28 b.8 c.-4 d.-16

8. 2 pt. Answer from Relations b. 8

9. 3 pt. Question from Relations Evaluate the function rule f(a) = 3a+5 to find the range of the function for the domain {-3,1,4}

10. 3 pt. Answer from Relations {-4, 8, 17}

11. 4 pt. Question from Relations Use a mapping diagram to determine whether {(3,7), (3,8), (3,-2), (3,4), (3,1)} is a function.

12. 4 pt. Answer from Relations Yes

13. 5 pt. Question from Relations Find a function rule. x ya. y=x+5 2 7b. y=2x+3 5 19c. y=4x-1 -4 -17d. y=3x+4

14. 5 pt. Answer from Relations c. y=4x-1

15. 1 pt. Question from Direct Variation How do you solve a direction variation?

16. 1 pt. Answer from Direct Variation Set up a proportion, cross multiply, and divide.

17. 2 pt. Question from Direct Variation If y varies directly to x, what would the proportion look like?

18. 2 pt. Answer from Direct Variation y/x = y/x

19. 3 pt. Question from Direct Variation A varies directly as b. If A = 3 when b = 8, then find the value of A when b = 1000

20. 3 pt. Answer from Direct Variation A = 375

21. 4 pt. Question from Direct Variation The cost of a House in Florida is proportional to the size of the house. A 2850-square-foot house cost $182400, then what is the cost of a 3640-square-foot house?

22. 4 pt. Answer from Direct Variation Cost = 232960

23. 5 pt. Question from Direct Variation The amount of sale taxes on a new car is direct proportional to purchase price of the car, if a $25000 car pays $1750 in sales taxes. What is the purchase price of a new car which has a $3500 sale taxes?

24. 5 pt. Answer from Direct Variation $50,000

25. 1 pt. Question from Rate of Change Find the slope of (-2,3) & (4,6)

26. 1 pt. Answer from Rate of Change 1/2

27. 2 pt. Question from Rate of Change What is the formula of rate of change?

28. 2 pt. Answer from Rate of Change Change of y / change of x

29. 3 pt. Question from Rate of Change What is the slope formula?

30. 3 pt. Answer from Rate of Change y 2 – y 1 / x 2 – x 1

31. 4 pt. Question from Rate of Change Find the Rate of Change. x y 3 6 8 16 18 36

32. 4 pt. Answer from Rate of Change 2

33. 5 pt. Question from Rate of Change Explain how to find the rate of change.

34. 5 pt. Answer from Rate of Change Find the difference in the y values, find the difference of the x values. Create a fraction of the difference of y’s over the difference of x’s

35. 1 pt. Question from Linear Equations Name the three types of Linear Equations.

36. 1 pt. Answer from Linear Equations Point-Slope, Slope-Intercept, Standard

37. 2 pt. Question from Linear Equations Write an equation that goes through the points (-1,5) & (4,6)

38. 2 pt. Answer from Linear Equations y-5=(-1/5)(x+1) Or y-6=(-1/5)(x-4) Or Y=(-1/5)x+(24/5) Or x+5y=24

39. 3 pt. Question from Linear Equations Write a point-slope equation of a line that goes through point (1,1) and has a slope of 4

40. 3 pt. Answer from Linear Equations y-1=4(x-1)

41. 4 pt. Question from Linear Equations If two lines are parallel, what can you tell about them? If two lines are perpendicular, what can you tell about them?

42. 4 pt. Answer from Linear Equations Parallel have the same slope, never intersect. Perpendicular have negative reciprocals, intersect at right angle.

43. 5 pt. Question from Linear Equations Write an equation for a line that is perpendicular to y=3x+2 and goes through (1,4)

44. 5 pt. Answer from Linear Equations y -4 = 3(x-1)

45. 1 pt. Question from Scatter Plots What are the two best numbers to have for a correlation?

46. 1 pt. Answer from Scatter Plots 1 or -1

47. 2 pt. Question from Scatter Plots How do you find the line of best fit?

48. 2 pt. Answer from Scatter Plots Plug in the coordinates in the calculator, then Stat -> Calc-> LinReg

49. 3 pt. Question from Scatter Plots What is an example of a strong positive correlation?

50. 3 pt. Answer from Scatter Plots Answers Vary- Partner decide if correct

51. 4 pt. Question from Scatter Plots Find the best fit line for: (-1,6), (3,0), (4,2), (9,9)

52. 4 pt. Answer from Scatter Plots Y=.379x+2.828

53. 5 pt. Question from Scatter Plots What is the correlation for a best fit line created for the points (-8,-3), (0,2), (3,6) & (8,14)?

54. 5 pt. Answer from Scatter Plots.968

55. Buzzer Shot Using the points, (3,1) & (-4, 3) put the equation in all three forms.

56. Buzzer Shot Answer y-1 = (-2/7)(x-3) y=(-2/7)x+13/7 2x+7y=13