Download Module 2 Sample Test

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