Quiz about Keystone Algebra Review

Question 1

Sylvie is going on vacation. She has already driven 60 miles in one hour. Her average speed for the rest of the trip is 57 miles per hour. How far will Sylvie have driven 7 hours later?

Accepted Answer

459 miles

Answer

402 miles

Answer

420 miles

Answer

399 miles

Question 2

Do the ordered pairs below represent a relation, a function, both a relation and a function, or neither a relation nor a function?

(-3,5) , (3,-7) , (7,-15) , (9,-19)

Accepted Answer

both a relation and a function

Answer

function only

Answer

neither a relation nor a function

Answer

relation only

Question 3

Which of the following tables represents a function?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 4

Which of the following relations describes a function?

Accepted Answer

{ (2, 3), (3, 3), (4, 3), (5, 3) }

Answer

{ (-2, 0), (0, -2), (0, 2), (2, 0) }

Answer

{ (0, 0), (2, -2), (2, 2), (3, 3) }

Answer

{ (3, 3), (3, 4), (3, 5), (3, 6) }

Question 5

Find the domain of the function:

y = -x² + 5

Accepted Answer

{all real numbers}

Answer

{all real numbers greater than or equal to five}

Answer

{all real numbers less than five}

Answer

{all real numbers between negative three and three}

Question 6

The elements of a function of x are (7, 8), (70, 17), and (700, 107). What is the domain of the function?

Accepted Answer

{7, 70, 70}

Answer

{693}

Answer

{7, 8, 17, 70, 107, 700}

Answer

{7, 8, 70}

Question 7

According to the table below, what is the range of the data?

Accepted Answer

9, 16, 25, 36, 49

Answer

12, 20, 30, 42, 56

Answer

3, 4, 5, 6, 7

Answer

6, 8, 10, 12, 14

Question 8

At LMHS, t-shirts sell for $17.56 and cost $12.01 to produce. Which equation represents p, the profit, in terms of x, the number of t-shirts sold?

Accepted Answer

p = x($17.56 - $12.01)

Answer

p = $17.56 + $12.01x

Answer

p = $17.56x - $12.01

Answer

p = x($17.56 + $12.01)

Question 9

The population of a small town, P, as a function of time, t, in years past 1940 is:

P = 2,111 + 375t

For which of the following years was the population of the town 16,736 .

Accepted Answer

1979

Answer

1989

Answer

1939

Answer

1949

Question 10

Which of the following functions matches the graph?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 11

Which of the following tables corresponds to the graph below?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 12

Alex is flying 2,075 miles. The table below shows the number of miles left to go after each hour of travel time.

If Alex continues at the current rate, how many miles will he have remaining after traveling for 7 hours?

Accepted Answer

717 miles

Answer

911 miles

Answer

707 miles

Answer

523 miles

Question 13

Which of the following functions matches the graph?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 14

Which of the following situations represents a linear relationship?

Accepted Answer

Someone is losing 5 pounds every month on her diet.

Answer

A radioactive substance loses half of its mass every 12 years.

Answer

The cost of living increases in a certain area by 3 percent each year.

Answer

The volume of a cubical gift box depends on the side length of the box.

Question 15

A pizza buffet has prepared 18 pizzas to place on the line at the beginning of lunch at 11:00 a.m. The equation y = 14x + 18 can be used to describe the total number of pizzas that have been placed out on the buffet line, where x represents every 9 minutes after 11:00 a.m. Which statement best describes the rate of change in the number of pizzas set out on the buffet?

Accepted Answer

Every 18 minutes, 28 more pizzas were set out on the buffet.

Answer

Every 18 minutes, 38 more pizzas were set out on the buffet.

Answer

Every 9 minutes, 24 more pizzas were set out on the buffet.

Answer

Every 18 minutes, 14 more pizzas were set out on the buffet.

Question 16

Robert is making a map for Geography. In order to draw the map, he must create a scale converting the measured inches on the map to actual miles.

Use the table to identify the scale he used for his map.

Accepted Answer

1 in. = 36 miles

Answer

1 in. = 12 miles

Answer

1 in. = 9 miles

Answer

1 in. = 18 miles

Question 17

Find the x- and y-intercepts of .

-x + 2y = 8

Accepted Answer

x-intercept: -8, y-intercept: 4

Answer

x-intercept: -11, y-intercept: 4

Answer

x-intercept: -11, y-intercept: 3

Answer

x-intercept: -8, y-intercept: 3

Question 18

Write an equation in slope-intercept form for the line that passes through (3, 7) and (7, 4).

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 19

Jim drove for several hours, recording the distance he had traveled in miles. Graph the data and show the rates of change.

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 20

Find the slope of the line.

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 21

Tara creates a budget for her weekly expenses. The graph shows how much money is in the account at different times. Find the slope of the line. Then tell what rate the slope represents.

Accepted Answer

The slope is -50. The slope means that the amount of money in the account is decreasing at a rate of $50 every week.

Answer

The slope is -50. The slope means that the amount of money in the account is decreasing at a rate of $50 every 2 weeks.

Answer

The slope is -0.02. The slope means that the amount of money in the account is decreasing at a rate of $0.02 every week.

Answer

The slope is 50. The slope means that the amount of money in the

account is increasing at a rate of $50 every week.

Question 22

Tell whether the function y = 5x - 3 is linear. If so, graph the function.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

Not a linear function.

Question 23

The graph shows a line of best fit for data collected on the amount of water bills in relation to the number of gallons of water used. What is the equation of the line of best fit?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 24

The graph shows a line of best fit for data collected on the size of green bean harvests in relation to the amount of rainfall. What is the equation of the line of best fit?

Accepted Answer

y = 1,000x + 1,000

Answer

y = x + 1,000

Answer

y = x + 1

Answer

y = 1,000x + 1

Question 25

Which of the following equations represents the line that is drawn below?

Accepted Answer

y = 0.72x + 1.4

Answer

y = 0.72x - 1.4

Answer

y = -0.72x - 1.4

Answer

y = -0.72x + 1.4

Question 26

The daily high temperatures, in degrees Fahrenheit, of a town are recorded for one year. The median high temperature is 62 F. The interquartile range of high temperatures is 32. Which is most likely to be true?

Accepted Answer

Approximately 50% of the days had a high temperature less than 62F.

Answer

Approximately 25% of the days had a high temperature less than 30F.

Answer

Approximately 25% of the days had a high temperature less than 62F.

Answer

Approximately 75% of the days had a high temperature less than 94F.

Question 27

What is the range of the following set of numbers? {23,45,43,46,23}

Accepted Answer

23

Answer

0

Answer

13

Answer

1

Question 28

What is the interquartile range of the following set of numbers?

{398,464,486,524,505,421,442}

Accepted Answer

84

Answer

107

Answer

126

Answer

464

Question 29

A company made a bar graph showing the amount of sales for each month in thousands of dollars. Which is the closest to the mean amount of sales for the 4-month period?

Accepted Answer

$7000

Answer

$7500

Answer

$7625

Answer

$6500

Question 30

The graph below shows the results of an analysis of a group of eighteen male students. Height is measured in inches and self-esteem is measured by taking the average of the student's responses on a survey (where 1 means lowest self-esteem and 10 means highest self-esteem).

Accepted Answer

As an individual's height increases, self-esteem increases.

Answer

As an individual's height increases, self-esteem decreases.

Answer

There is no relationship between an individual's height and self-esteem.

Answer

As an individual's height decreases, self-esteem increases.

Question 31

The number of CD sales for a new musical group over a six-month period are represented by the box plot below

Which set of data represents the median and the third quartile, in that order?

Accepted Answer

70, 80

Answer

53, 65

Answer

53, 80

Answer

70, 84

Question 32

What is the range of the data shown in the stem-and-leaf plot?

Accepted Answer

45

Answer

5

Answer

48

Answer

38

Question 33

The following stem-and-leaf plot shows the scores on the most recent math exam. What is the mode of these values?

Accepted Answer

83

Answer

97

Answer

88

Answer

66

Question 34

The graph shows a line of best fit for data collected on the price of a unit in relation to the number of units sold. What is the equation of the line of best fit?

Accepted Answer

None of the Above

Answer

A.

Answer

B.

Answer

C.

Question 35

Crystal's grandmother planted a tree on the farm in 1920. She measured the tree trunk's diameter every 10 years and recorded the measurements. The scatter plot below shows the progress of the diameter. (The year 1930 is equivalent to 10 on the graph.)

y = 0.507x + 5.543

Looking at the line of best fit equation shown below the graph, what will be the approximate diameter of the tree in 2010?

Accepted Answer

51.173 inches

Answer

56.243 inches

Answer

46.103 inches

Answer

45.63 inches

Question 36

Which scatterplot most likely has a line of best fit represented by y = 2x + 1?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 37

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 3?

Accepted Answer

1/18

Answer

1/12

Answer

1/9

Answer

1/2

Question 38

Bobby is taking a multiple-choice history test. He has decided to randomly guess on the first two questions. On each question there are 4 answer choices. What is the probability that he answers the first question correctly and the second question correctly?

Accepted Answer

1/16

Answer

9/16

Answer

3/16

Answer

1/4

Question 39

Holly is flipping a coin and pulling a marble from a bag. There are 4 white marbles, 2 blue marbles, and 5 green marbles, all of the same size, in the bag. What is the probability that the coin lands on heads and she pulls a green marble from the bag?

Accepted Answer

5/22

Answer

6/13

Answer

1/4

Answer

3/11

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics