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NBHS Unit 3 Test

Last updated almost 5 years ago
24 questions
Answer each question showing all your work. Watch your time so you are not stuck in the middle of a question when it is submitted.

In submitting this quiz you are agreeing that you have completed this in a honest manner and did not seek and/or help others in its completion.
For questions 1 - 9 answer the questions using the graph and given equations.
3

Match each equation with line A, B, or C from the graph: (1 point each)

3

Find the missing coordinate for each equation in the table below. (3 points)


3

Find the missing coordinate for each equation in the table below. (3 points)


3

Find the missing coordinate for each equation in the table below. (3 points)



1

Looking at your previous answers write the coordinates (x, y) of the point that is on all three lines. (1 point)

3

Looking at your previous answers what are the slopes of each line? A: _______ B: ________ C:_________

3

Looking at your previous answers what are the y-intercepts of each line? A: _______ B: ________ C:_________

1

What is the slope of a line parallel to line A.

1

What is the slope of a line perpendicular to line B.

4

Given the points (2, 4) and (-4, -2), write the equation in slope-intercept form. (4 pts.)

2

The function y = 14x + 20 represents the amount of money, y (in dollars), Josh charges to landscape a lawn
in x hours.

a.) Identify the independent and dependent variables. (2 pts.)

2

The function y = 14x + 20 represents the amount of money, y (in dollars), Josh charges to landscape a lawn
in x hours.

b.) Josh can take 1, 2 or 3 hours to landscape a lawn. Calculate the range of the function and identify
the domain and range. (2 pts.)


2

The function y = 14x + 20 represents the amount of money, y (in dollars), Josh charges to landscape a lawn
in x hours.

c.) If it took Josh 2.5 hours to Landscape Mr. Rivera’s lawn, how much will Mr. Rivera pay Josh to do
the job? (2 pts.)

1

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

a.) Identify the slope (rate of change). (1 point)

1

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

b.) Explain the real-world meaning of the slope. (1 point)

1

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

c.) What is the y-intercept? (1 point)

1

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

d.) Explain the real-world meaning of the y-intercept. (1 point)

2

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

e.) Write an equation for the situation. (2 points)

3

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

f.) When will the class break-even (neither make nor lose money). Explain how you arrived at your answer.
(1 point for substitution, 2 points for solving)

3

The NBHS Music Department is selling cookies to raise money for their trip to Disney at the end of the
year. The Borinquen Bakery charges the department $160 for the cookies, including the cost for
delivery. The department decides to sell the cookies for $2.00 each. Let x represent the number of
cookies sold, and y represent the net profit.

g.) If the class sells 500 cookies, what will the profit be? Show your work. (1 point for substitution, 2 points
for solving)

2

To buy a game at Gamestop Online it cost $50 a game and the cost for shipping is $15 no matter how many
games you buy.

a.) Write an equation in slope-intercept form to represent the situation. (2 pts.)

2

To buy a game at Gamestop Online it cost $50 a game and the cost for shipping is $15 no matter how many
games you buy.

b.) What does the slope represent in the problem? (2 pts.)

3

To buy a game at Gamestop Online it cost $50 a game and the cost for shipping is $15 no matter how many
games you buy.

c.) Find the cost for buying 1, 2 and 5 games, fill in the table below. (1 point each)


2

To buy a game at Gamestop Online it cost $50 a game and the cost for shipping is $15 no matter how many
games you buy.

d.) If you spend $215 at Gamestop Online, how many games did you buy? (2 pts.)