Linear functions unit test | Algebra homework help

Linear Functions Unit Test

 

Multiple Choice

 

1. For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

x y

8 13

16 26

24 39

(1 point)

 

2. For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

x y

40 32

28 16

16 12

(1 point)

 

3. Match the equation with its graph.

x y =

(1 point)

 

4. Match the equation with its graph.

–0.4x – 0.8y = 0.10

(1 point)

 

5. The table shows the number of miles driven over time.

Time (hours) Distance (miles)

4 184

6 276

8 368

10 460

Express the relationship between distance and time in simplified form as a unit rate. Determine which

statement correctly interprets this relationship.

(1 point)

 

6. Find the slope of the line. (1 point)

 

7. What is the slope of the line that passes through the pair of points (1, 7) and (10, 1)? (1 point)

 

8.

What is the slope of the line that passes through the pair of points (– , –3) and (–5, )?

 

9. What is the slope of the line? (1 point)

 

10. Write an equation in point-slope form for the line through the given point with the given slope.

(8, 3); m = 5

(1 point)

 

11. Write an equation in point-slope form for the line through the given point with the given slope.

(–10, –6); m =

(1 point)

 

12. The table shows the height of a plant as it grows. Which equation in point-slope form gives the plant’s

height at any time?

Time (months) Plant Height (cm)

3 21

5 35

7 49

9 63

(1 point)

 

13. What is the graph of the equation?

x = –3

(1 point)

 

14.

Write y = – x + 7 in standard form using integers.

(1 point)

 

15. Write an equation for the line that is parallel to the given line and passes through the given point.

y = 5x + 10; (2, 14)

(1 point)

 

16. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.

y = –3x + 7

–2x + 6y = 3

(1 point)

 

17. Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.

y = ( )x + 8

–2x + 8y = 4

(1 point)

 

18. Write the equation of a line that is perpendicular to the given line and that passes through the given

point.

y – 2 = (x + 5); (–4, 9)

(1 point)

 

19.

Below are the functions of y = |x| and y = |x| – 5. How are the functions related? (1 point)

 

20. Describe how the graphs of y = |x| and y = |x + 5| are related. (1 point)

21. Graph y = |x| – 2. (1 point)

 

22. Graph y = |x – 4|. (1 point)

 

23. Which type of correlation is suggested by the scatter plot? (1 point)

 

Short Answer

 

24. You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation

coefficient for your data set is –0.015. How confident can you be that your predicted value will be

reasonably close to the actual value?

(2 points)

 

25. A college football coach wants to know if there is a correlation between his players’ leg strength and the

time it takes for them to sprint 40 yards. He sets up the following test and records the data:

Every day for a week, he counts how many times each player can leg press 350 pounds. The following

week, he has each player sprint 40 yards every day. The table shows the average number of leg-press

repetitions and the average 40-yard dash time (in seconds) for seven randomly selected players. What is

the equation of the line of best fit? How many seconds should he expect a player to take to run 40 yards

if that player can do 22 leg-press repetitions? Round any values to the nearest tenth, if necessary.

Leg Press (reps) 15 18 8 30 26 12 21

40-yard Dash (s) 5.2 6.3 6.8 8.2 8.0 5.3 5.9

 

(3 points)

Calculate your paper price
Pages (550 words)
Approximate price: -

Why Choose Us

Quality Papers

We value our clients. For this reason, we ensure that each paper is written carefully as per the instructions provided by the client. Our editing team also checks all the papers to ensure that they have been completed as per the expectations.

Professional Academic Writers

Over the years, our Acme Homework has managed to secure the most qualified, reliable and experienced team of writers. The company has also ensured continued training and development of the team members to ensure that it keep up with the rising Academic Trends.

Affordable Prices

Our prices are fairly priced in such a way that ensures affordability. Additionally, you can get a free price quotation by clicking on the "Place Order" button.

On-Time delivery

We pay strict attention on deadlines. For this reason, we ensure that all papers are submitted earlier, even before the deadline indicated by the customer. For this reason, the client can go through the work and review everything.

100% Originality

At Papers Owl, all papers are plagiarism-free as they are written from scratch. We have taken strict measures to ensure that there is no similarity on all papers and that citations are included as per the standards set.

Customer Support 24/7

Our support team is readily available to provide any guidance/help on our platform at any time of the day/night. Feel free to contact us via the Chat window or support email: support@acmehomework.com.

Try it now!

Calculate the price of your order

We'll send you the first draft for approval by at
Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

Papers Owl has stood as the world’s leading custom essay writing services providers. Once you enter all the details in the order form under the place order button, the rest is up to us.

Essays

Essay Writing Services

At Papers Owl, we prioritize on all aspects that bring about a good grade such as impeccable grammar, proper structure, zero-plagiarism and conformance to guidelines. Our experienced team of writers will help you completed your essays and other assignments.

Admissions

Admission and Business Papers

Be assured that you’ll definitely get accepted to the Master’s level program at any university once you enter all the details in the order form. We won’t leave you here; we will also help you secure a good position in your aspired workplace by creating an outstanding resume or portfolio once you place an order.

Editing

Editing and Proofreading

Our skilled editing and writing team will help you restructure you paper, paraphrase, correct grammar and replace plagiarized sections on your paper just on time. The service is geared toward eliminating any mistakes and rather enhancing better quality.

Coursework

Technical papers

We have writers in almost all fields including the most technical fields. You don’t have to worry about the complexity of your paper. Simply enter as much details as possible in the place order section.

error: Content is protected !!