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Keystone Algebra I Module 2 Benchmark Test Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. A graph of the linear equation is shown below. a. b. ____ y=- x +4 y=- x +6 Which equation describes the graph? c. y= x+4 d. y=- x +4 2. The scatter plot below shows the temperature (y) of some states’ elevations (x). Which equation could describe the line of best fit? a. y = 100x + 25 c. y = -100x + 25 b. y = -.01x + 25 d. y = -.01x + 2500 ____ 3. The daily high temperatures, in degrees Fahrenheit (oF), of a town are recorded for one year. The median high temperature is 50oF. The interquartile range of high temperatures is 25. Which of the following COULD be true? a. Q1 = 26, Q3 = 51 c. Q1 = 49, Q3 = 74 b. 50% of the data is less than 50oF d. All of the above ____ 4. A number cube with sides labeled 1 through 6 is rolled two times, and the sum of the numbers that end face up is calculated. What is the probability that the sum of the numbers is 6. a. c. b. d. Constructed Response 5. Last summer Erica purchased materials to sell volleyball nets (including poles) to local schools. She sold each net for the same amount of money. The table below shows the relationship between the number of nets sold and running total of Erica’s profit. Nets sold Total profit 5 $2 8 $152 12 $352 26 $1052 A. Write a linear equation, in slope-intercept form to represent the amount of Erica’s total profit (y) based on the number of nets (x) she sold. y =____________________________________ B. How much did Erica spend on her raw materials? $ = _____________________________________ C. If she sells 34 nets, how much will she profit? fewest number = ___________________________ D. Construct a graph that only shows the range values where Erica loses money. y 50 –50 1 2 3 4 5 x –100 –150 –200 –250 6. Here are a sample of 6 scores on the last Trig test: A. What is the median score? 65, 75, 85, 89, 92, 95 median:_____________________________ B. What is the mean of the sample? mean: ________________ C. Two more tests are used in the sample, if one test is 70, what is the other score if the median and mean remain the same. new test score: ____________ D. What is the interquartile range of the sample of 8 test scores? Interquartile Range of 8 scores; _____________ Keystone Algebra I Sample Exam Module 2 Answer Section (7/12 points needed to pass) MULTIPLE CHOICE 1. 2. 3. 4. ANS: ANS: ANS: ANS: A C D B PTS: PTS: PTS: PTS: 1 1 1 1 Constructed Response 5. ANS: A. y = 50x-248 (other forms also accepted) B. $248 C. $1452 y 50 –50 1 2 –100 –150 –200 –250 D. PTS: 4 6. ANS: A. 87 B. 83.5 C. 97 D. 93.5-72.5 = 21 PTS: 4 3 4 5 x