Algebra

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

10 | 12
15 | 18
20 | 24

A. yes; y = 1.2x
B. yes; y = 2x
C. yes; y = x + 1
D. no; y does not vary directly with x

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
32 | 24
16 | 8
8 | 6

3. Match the equation with the graph. y=1/3x-6

4. Match the equation with the graph. -3x+5y=15

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

time (hours) | distance (miles)
4 | 204
6 | 306
8 | 408
10 | 510

6. Fine the slop of the line. So I can't put the picture in but I can put the answers in and hopefully someone will know what the graph looks like or has taken the test and knows the answer lol.
A. -4
B. -1/4
C. 1/4
D. 4

7. what is the slope of the line that passes through the pair of points (3,8) and (9,5)

8. What is the slope of the line. Again I can't put the picture in so ill just put the answers.
A. 0
B. 1
C. undefined
D. infinity

9. write an equation in point-slope form for the line through the given point with the given slope. (8,3); m=6

10. write an equation in point slope form for the line through the given point with the given slope. (-10, -6); m=-5/8

11. The table shows the height of a plant as it grows. Which equations in point slope form gives the plants height at any time

time (months) | Plant height (cm)
2 | 18
4 | 36
6 | 54
8 | 72

12. what is the graph of the equation. x=-5

13. write y=-3/4x+3 in standard from using integers.

14. write an equation for the line that is parallel to the given line and passes through the given point. y=5x+10; (2,14)

15. tell whether the lines for each pair of equations are parallel, perpendicular, or neither
y=-3x+7

-2x+6y=3

16. tell whether the lines for each pair of equations are parallel, perpendicular, or neither
y=-1/4x+10

-2x+8y=6

17. write the equation of a line that is perpendicular to the given line and that passes through the given point.
y-2 =7/3(x+5); (-4,9)

18. below are functions of y=|x| and y=|x|-5. How are the functions related

19. describe how the graphs of y=|x| and y=|x+2| are related

20. graph y=|x|-5

21. graph y=|x-4|

22. which type of correction is suggest by the scatter plot.

So I didn't add the answers only cause I'm lazy af. But if anyone needs me too I can.

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  1. Please post your answers to two or three of those questions. Then we'll check them.

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    Ms. Sue
  2. 1.
    A. Yes; y=1.2x***
    B. Yes; y=2x
    C. Yes; y=x+1
    D No; y does not vary directly with x

    2.
    A. Yes; y=0.5x
    B. Yes; y=2x
    C. Yes; y=1.5x
    D.No; y does not vary directly with x***

    3.
    A.
    B.
    C.***
    D.
    the answers for those are graphs and I can't really put them in
    4.
    A.
    B.***
    C.
    D.
    The same is with these the answers are graphs and i can't put them in
    5.
    A. 51/1; your car travels 51 miles every 1 hour***
    B. 204; your car travels 204 miles
    C. 1/51; your car travels 51 miles every 1 hour
    D. 10; your var travels for 10 hours

    6.
    A. -4
    B. -1/4***
    C.1/4
    D.4

    7.
    A. -2
    B. 2
    C. 1/2***
    D. -1/2

    8.
    A. 0
    B. 1
    C. undefined***
    D. infinity

    9
    A. y+3=6(x-8)***
    B. y-3=6(x-8)
    C. y-3=6(x+8)
    D. y+3=6x+8

    10.
    A. y-6=-5/8(x-10)
    B. y-6=-5/8(x+10)
    C. y+6=-5/8(x+10)
    D. y+10=-5/8(x+6)***

    11.
    A. y+18=9(x+2)
    B. y-18=9x+2
    C. y-18=9(x-2)***
    D. The relationship is nonlinear

    12.
    A.***
    B.
    C.
    D.
    This one has graphs as answers too
    13.
    A. 3x+4y=12
    B. 3x+4y=-12***
    C. 3x-4y=12
    D. -3x+4y=12

    14.
    A. y=1/5x+4
    B. y=-1/5x-4
    C. y=5x-68
    D. y=5x+4***

    15.
    A. Parallel
    B. perpendicular ***
    C. neither

    16.
    A. parallel
    B. perpendicular
    C. neither ***

    17.
    A. y-9=-3/7(x-4)***
    B. y-9=3/7(x-4)
    C. y-9=-3/7(x+4)
    D. y-9 =3/7(x+4)

    18.
    A. the functions have the same shape. The y-intercerpt of y=|x| is 0, and the y-intcercept of the second function is 5
    B. the functions have the same y-intercept. the second function is steeper then y=|x|
    C. The two functions are the same ***
    D. the functions have the same shape. the y-intercept of y=|x| is 0, and the y-intcercept of the second function is -5

    19.
    A. the graphs have the same shape. the y-intercept of y=|x| is 0, and the y-intercept of the second graph is -2***
    B. the graphs have the same shape. the y-intercept of y=|x| is 0. and the x-intercept of the second graph is 2
    C. the graphs have the same shape. the y-inyercept of y=|x| is 0. and the y-intcerpent of the second graph is 2
    D. the two graphs are the same

    20.
    A. ***
    B.
    C.
    D.
    this one has graphs has answers
    21.
    A.
    B.***
    C.
    D.
    same with this the answers are graphs
    22.
    A. positive correlation
    B. equal correlation
    C. negative correlation
    D. no correlation***

    *** my answers

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  3. Omg im so sorry I miss read that I miss read the part that said only post 2 or 3 of my answers sorry Mr sue

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  4. Which three would you like me to check?

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    Ms. Sue
  5. could you check 7,9 and 10 please?

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  6. What are the questions for 7, 9, 10?

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    Ms. Sue
  7. if you scroll up to the top to my first response it will say

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