U2L13: Functions Unit Test 8th grade answers

Question

1. What are the next three terms in the sequence?
A: 38, 49, 60***
2. 768 bulbs
3. A, the one that looks like an upright wide V
4. C, the one that looks like a kinda unfinished trapezoid
5. The speed of the car decreases from 4 mi/h to 2mi/h in the first 3 seconds, increases to 5mi/h in the next 2 seconds, and then remains at 5mi/h for the last 5 seconds
6. 25
7. E(m) = 12m
8. D, where the y-intercept is (0, -2) and says 4/3 next to it
9. Dixie Hill; it rises 3/5 foot for every 1 foot of horizontal travel
10. B, the y-intercept is (0, -2) and is a positive slope
11. B, the y-intercept is (0, 0) and is a negative slope
12. y = 6 + 3x
13. D, the one with input -3, -2, 2, 3 and output 0, 1, 2, 3
14. y = 1.10(x - 1) + 1.35
15. y = -3x - 8
16. y = -x^2 + 5

** I do not know if essay answers are correct because I haven't been graded yet, but I hope it still helps! If you decide to use my essay answers just make sure to reword them so it's not plagiarism :> **

17. x = 420h. Because the person is burning 420 calories per hour, the h represents the hour, so, 1 hour is 420 calories, 2 hours is 840 calories, and 3 hours is 1,260 calories, and so on.
18. y = (-1)x + 3. First, you see how the y changes, it is being subtracted by 1 every time. Since the y is being subtracted by 1 every time, you go to the first x and multiply -1 by 2, which is -2. Now you need to add the +3 to make it match the first y value.
19. Hint: A = Winter, B = spring, C = Summer, and D = winter (I think this is right I'm not sure)
20. The proportional relationship formula is y = mx, so by dividing the values of y by the values of x, you won't get a constant value. So this is a non-proportional relationship.

Answer 1

I'll tell you the feedback from my teacher on the essay questions once it's graded!

Answer 2

Don't you feel just a little bit guilty in helping students to cheat?

Answer 3

I took the test and these are the answers I got:

1. D, 33,42,51
2. D, 256 bulbs
3. B, -4,-3,0,5
4. B, A graph
5. A, The speed of the car decreases from 4mi/h to 2mi/h in the first 3 seconds, increases to 5mi/h in the next 2 seconds, and then remains at 5mi/h for the last 5 seconds.
6. C, 25
7. A, E(h) = 10h
8. D, A graph
9. D, Liberty Hill; it rises 3/4 foot for every 1 foot of horizontal travel
10. A, A graph
11. C, A graph
12. A, y = 4 + 5x
13. C, y = 3.50x + 6.00
14. A, y = 1.10 (x - 1) + 1.35
15. A, y = -3x - 8
16. D y = x^2 + 5
17 - 19 are essay questions

Answer 4

i was right