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Friday, April 20 th

Friday, April 20 th. Warm UP. Devon wants to wrap a present for her sister. The rectangular box has dimensions of 12 x 4 x 6 in. How much wrapping paper will she need? Find the area of the triangle who’s base is 5 cm and height is 15.5 cm. Please complete Warm up. March Madness.

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Friday, April 20 th

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  1. Friday, April 20th Warm UP Devon wants to wrap a present for her sister. The rectangular box has dimensions of 12 x 4 x 6 in. How much wrapping paper will she need? Find the area of the triangle who’s base is 5 cm and height is 15.5 cm Please complete Warm up

  2. March Madness

  3. FORMULA SHEET a=Bh l x w Rectangular Prism: Cylinder Prism:

  4. Whiteboard Review

  5. 1993 1995 1997 1999 2001 2003 The graph shows the dollar amount of sales made at Art’s Autos from 1993 to 2003. Between which 2 years did sales increase the most? A. 1993 - 1995 B. 1995 - 1997 C. 1997 - 1999 D. 2001 - 2003

  6. What is the next term in the following pattern? 13.7, 12.8, 11.9, 11.0, A. 10.1 B. 10.9 C. 11.1 D. 12.9

  7. Which of the following statements is TRUE about the equation ? A. As the value of x increases by one, the value of y increases by two. B. As the value of x increases by one, the value of y doubles. C. As the value of x increases by one, the value of y increases by three. D. As the value of x increases by one, the value of y triples.

  8. Using the table, which is the order of insects from shortest to longest? A. ant, bumblebee, cockroach, midge B. bumblebee, ant, cockroach, midge C. midge, cockroach, ant, bumblebee D. midge, ant, cockroach, bumblebee

  9. James has a toy box shaped like a cube. The height of the toy box is 3 m. What is the volume of the toy box? a.9 m2 b. 9 m3 c. 27 m2 d. 27 m3

  10. Which of the nets below could be used to form a pyramid like the one below?

  11. There are 60 students in the band. According to the graph, how many students play clarinet? • A. 32 students C. 25 students • 27 students D. 15 students

  12. Macy’s is having a sale on the end-of-season clothing. Marika found a skirt that is on sale for 30% off its original price. The original price of a skirt is $75.50. What is the sale price of the skirt? A. $22.65 B. $38.50 C. $45.50 D. $52.85

  13. Ernie’s cell phone company charges a monthly fee of $15 and $0.20 per minute used. Ernie talked for 60 minutes this month. How much will his phone bill be, not including taxes? A. $27 B. $45 C. $85 D. $135

  14. In a scale drawing of a house,1 inch: 15 ft. If one side of the house is 37.5 feet, what is the length of that side in the drawing? A. 2.5 in. B. 0.4 ft. C. 2.5 ft. D. 562.5 in.

  15. Which list is ordered from LEAST to GREATEST? A. , , 3.025, 32.5% B. 32.5%, , , 3.025 C. 3.025, 32.5%, , D. 32.5%, 3.025, ,

  16. The line plot below shows the ages of teachers in your school. Which of the following statements are true according to the data? A. The oldest teacher is 28 years older than the youngest teacher. B. Most of the teachers are older than 45. C. The most common age is 48. D. All three of the above statements are true.

  17. Justin is organizing his trophy case. He has 30 baseball trophies and 45 soccer trophies. He wants to arrange the trophies so that each row has the same number of trophies from only one sport. What is the greatest number of trophies that can be in each row? A. 3 C. 15 B. 5 D. 30

  18. For her birthday, Jenna received 5 stuffed animals, 3 DVDs, 2 books, 1 game, 8 CDs, 1 shirt, and two pairs of jeans. What is the ratio of DVDs to her total number of gifts? A. 1:3 B. 3:8 C. 3:19 D. 3:22

  19. The table shows Maria’s results on a 50-question social studies test. Of the questions she answered correctly, what percent were true-false questions? A. 30% C. 40% B. 33⅓% D. 67⅔%

  20. You are sending a blanket to your friend’s brother in Iraq. To determine the cost for mailing the package, the post office needs to know the dimensions of the package. Which units would be most appropriate for measuring the dimensions of the package? A. inches B. cubic inches C. feet D. square feet

  21. A soft drink can holds 350 ml of cola. If the machine at the canning company contains 700 L of cola, how many cans can be filled before the machine is empty? A. 2 B. 20 C. 200 D. 2000

  22. What is the measurement of the unmarked side on these similar figures? A. 18 C. 42 B. 30 D. 48

  23. Which expression represents 15 less thana number x? A. 15 – x B. x – 15 C. 15 ÷ x D. x÷ 15

  24. A spider crawled 25 centimeters in six seconds. How long will it take the spider to crawl 15 meters if it continues to crawl at the same rate? A. 36 seconds B. 1 min. and 30 seconds C. 3 min. and 15 seconds D. 6 minutes

  25. Bianca works at a flower shop. In a recent delivery of roses, Bianca had to throw out 7 roses that had wilted. She divided the remaining roses into bunches of 12. Which expression represents this situation? A. 12(w – 7) B. 12w + 7 C. (w – 7) ÷ 12 D. 12(w÷ 7)

  26. It takes your teacher 10 minutes to grade 3 of your class papers. Which pair of ratios could be used to determine how long it will take her to grade all 117 of her students’ papers? A. C. B. D.

  27. Direct Variation

  28. y=kx

  29. What is k? Give the value shown for k • Y = 4x • Y=1/2x • Y=.75x • Y=x 4 1/2 .75 1

  30. Recap • A Linear equation makes a LINE when graphed • Y= kxis a special kind of LINEAR equation • Y=kx must go through (0,0) • In an equation we always put in a number for k (y=2x) • K is our slope (how steep the line is)

  31. Part I: Determining if a function is a Direct Variation

  32. Which one is a direct variation?

  33. Which one is a direct variation?

  34. Direct variation equation • Equation can not have anything added or subtracted to it. • Remember that y=x/4 is the same as y = 1/4 x

  35. Which Equation(s) are examples of direct variation? • Y= 3x+2 • Y= • Y= 0.85x • Y= • Y= 443x 2 3 And 5 *Nothing can be added or subtracted!

  36. Part II: Finding K in a Table

  37. Finding K K = y ÷ x

  38. Example #1 Answer: k=4

  39. Example #2 Answer: k=1/4

  40. Example #3 Answer: k=5/2 or 2 ½

  41. EXCITING NEWS!!! Now that we know how to find k in a table, we can look at a table to see if it’s truly a direct variation!!! Steps: • For each ordered pair, divide y by x and make sure it’s the same number! • If it’s not then it isn’t a direct variation

  42. Which table shows a Direct Variation?

  43. Graphing

  44. Where is the origin?!?!

  45. Do You Remember? • Which axis is the horizontal axis? _____________ • Which axis is the vertical axis? _____________

  46. K= Slope When you think of the word SLOPE…what do you think of?!

  47. Slopes are commonly associated with mountains

  48. The slope we are studying is associated with the graph of a line

  49. Different Slopes zero Positive Undefined Negative

  50. POSITIVE SLOPE“Reaching the Goal”

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