The writer is very fast, professional and responded to the review request fast also. Thank you.
Book/movie review
22/08/2022
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)
The writer is very fast, professional and responded to the review request fast also. Thank you.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.
Read moreEach paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.
Read moreThanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.
Read moreYour email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.
Read moreBy sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.
Read more