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Grade 8 Mid-Year Check In: Math SY: 2013-14 Student Name: Question 1: o o o o C. N D. O Which of the following could be the label for β13 on the number line above? A. Q B. R C. S D. T Which of the following gives the general rule for simplifying the product of two powers with the same base? A. Keep the base the same, and multiply the exponents. B. Keep the base the same, and add the exponents C. Multiply the bases, and multiply the exponents. D. Multiply the bases, and add the exponents. Question 4: o o o o Which of the following could be the label for β7 on the number line below? B. M Question 3: o o o o Period: A. L Question 2: o o o o Date: π₯π If π₯ π = 1, where m and n are positive integers, which of the following statements must be true? A. The sum of m and n is equal to 0. B. The value of m minus n is equal to 0. C. The sum of m and n is equal to 1. D. The value of m minus n is equal to 1. Page 1 of 6 Grade 8 Mid-Year Check In: Math Question 5: o o o o B. 15.5 C. 15.8 D. 16 Which of the following is a correct restatement of the product (2.3 x 102) (6.84 x 104)? A. (2.3 + 6.84) (102 + 104) B. (2.3 x 6.84) (102 + 104) C. (2.3 + 6.84) (102 x 104) D. (2.3 x 6.84) (102 x 104) Question 7: o o o o Which of the following is the best estimate for β250? A. 15 Question 6: o o o o SY: 2013-14 Which of the following is a correct restatement of the product (3.1 x 104) (7.58 x 102)? A. (3.1 x 7.58) (104 x 102) B. (3.1 + 7.58) (104 x 102) C. (3.1 x 7.58) (104 + 102) D. (3.1 + 7.58) (104 + 102) Question 8: Which of the following systems of linear equations is shown in the graph below? o A. y = 3x β 2 y = 2x + 3 o B. y = 3x β 2 y = 2x + 3 o C. y = β2x β 3 y = 3x + 2 o D. y = β3x β 2 y = 3x + 2 Page 2 of 6 Grade 8 Mid-Year Check In: Math Question 9: SY: 2013-14 Taundra is asked to find the slope of the line 4x β 7y = 6. 4 6 She decides to rewrite the equation in slope-intercept form: y = 7x β 7 . Why is this form of the equation more appropriate? o o o o A. Taundra can simply substitute 0 for y into the equation to find the slope. B. Taundra can simply substitute 0 for x into the equation and find the slope. 4 C. Taundra can read the slope directly from the equation; it is 7 . 6 D. Taundra can read the slope directly from the equation; it is β 7 . Question 10. Which of the following is the graph of y = β3? o o A. B. o C. o Question 11: Of the following approaches to solving the equation below for LEAST appropriate as a first step? D. which would be 4n β 16 = 6 β 2n o o o o A. Adding β 6 to both sides. B. Adding 16 to both sides C. Adding β2n to both sides. D. Adding 2n to both sides. Question 12: Ben paid $280 for parts and labor to get his car fixed. The cost of the parts was $160, and the cost of the labor was $30 per hour. How many hours of labor did it take to fix Benβs car? o o o o A. 14 B. 9 C. 6 D. 4 Page 3 of 6 Grade 8 Mid-Year Check In: Math SY: 2013-14 Question 13: After 5 ounces of oatmeal were removed from a full box of oatmeal, the oatmeal in the 5 box weighed 6 as much as it did when the box was full. What was the weight, in ounces, of the oatmeal in the box when it was full? o o o o A. 36 B. 30 C. 24 D. 20 Question 14: After 4 ounces of cereal were removed from a full box of cereal, the cereal in the box 5 weighed as much as it did when the box was full. 6 What was the weight, in ounces, of the cereal in the box when it was full? o o o o A. 20 B. 24 C. 30 D. 36 Question 15: What value of y makes the equation shown below true? 4(2y + 1) = 3(2y β 6) o o o o A. β 11 B. β4 C. β3 D. 11 Question 16. Of the following approaches to solving the equation shown below for n which would be LEAST appropriate as a first step? 5n β17 = 7 β3n o o o o A. Adding 3n to both sides B. Adding β3n to both sides. C. Adding 17 to both sides. D. Adding β7 to both sides. Page 4 of 6 Grade 8 Mid-Year Check In: Math SY: 2013-14 Question 17: If a line with a slope of β2 contains the point (2,1) then it must also contain which of the following points? o o o o A. (4,0) B. (3,β1) C. (3,3) D. (1,2) Question 18: Find x- and y-intercepts of the following equations. (2 pts.) a. y = 6x + 30 b. y = 3x + 12 Question 19: Solve each inequality and graph the solution on a number line. (2pts) a. 15x > β 60 b. 7x + 18 β₯ 25 Page 5 of 6 Grade 8 Mid-Year Check In: Math SY: 2013-14 Question 20: Find the slope and y- intercept of the following: a. b. c. d. Page 6 of 6