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calculusxy

  • one year ago

MEDAL for help!!!! Question is posted below:

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  1. calculusxy
    • one year ago
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    Write a set of walking instructions based on the data in Tables A and B.

  2. calculusxy
    • one year ago
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    @Michele_Laino

  3. calculusxy
    • one year ago
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    What do they mean by "walking instructions''?

  4. Michele_Laino
    • one year ago
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    maybe the function distance as function of time for both tables A and B

  5. Michele_Laino
    • one year ago
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    I'm not sure

  6. Michele_Laino
    • one year ago
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    do you know the least square method, for statistical processing of data?

  7. calculusxy
    • one year ago
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    No

  8. calculusxy
    • one year ago
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    But I can learn !

  9. Michele_Laino
    • one year ago
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    what subject are you studying at your school?

  10. calculusxy
    • one year ago
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    Well i am a rising eight grader...

  11. calculusxy
    • one year ago
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    And it's just math, latin, english, history, and physics.

  12. Michele_Laino
    • one year ago
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    please wait, I'm working on your answer...

  13. calculusxy
    • one year ago
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    Okay

  14. Michele_Laino
    • one year ago
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    I understand. We have to write two functions which model your data contained in both tables

  15. Michele_Laino
    • one year ago
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    for example, let's consider the first table

  16. calculusxy
    • one year ago
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    so can we use: y = mx +b

  17. Michele_Laino
    • one year ago
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    yes! that's right!

  18. calculusxy
    • one year ago
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    Okay so to find m: \[\frac{ (y_2 - y_1) }{ (x_2 -x_1) }\]

  19. Michele_Laino
    • one year ago
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    when x=0, we have y=0.8, so we can write: 0.8=m*0+b=b so b=0.8

  20. calculusxy
    • one year ago
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    So i am going to use the coordinates: (1,1) and (2,1.2) \[\frac{ (1.2 - 1) }{ (2 -1 ) }\]

  21. Michele_Laino
    • one year ago
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    similarly, when x=1, we have y=1 so we can write: 1=m*1+b=m+b=m+0.8 then: m=1-0.8=0.2 I prefer the substitution method

  22. calculusxy
    • one year ago
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    \[\frac{ 0.2 }{ 1 }\]

  23. Michele_Laino
    • one year ago
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    ok! so we can write: y=0.2*x+0.8

  24. calculusxy
    • one year ago
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    yes

  25. Michele_Laino
    • one year ago
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    now we have to do the same, with the second table

  26. calculusxy
    • one year ago
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    for b:\[\frac{ 3.2 - 3.6 }{ 3 -2 }\]

  27. calculusxy
    • one year ago
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    That would show a negative slope right?

  28. Michele_Laino
    • one year ago
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    yes! it is -0.4

  29. calculusxy
    • one year ago
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    \[\frac{ -0.4 }{ 1 }\]

  30. Michele_Laino
    • one year ago
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    ok!

  31. calculusxy
    • one year ago
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    so y = -0.4x + 4

  32. Michele_Laino
    • one year ago
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    so the requested function is: y=-0.4*x+4

  33. calculusxy
    • one year ago
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    So those are the two answers right?

  34. Michele_Laino
    • one year ago
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    yes! right!

  35. calculusxy
    • one year ago
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    Can you please help me with my physics homework as well?

  36. Michele_Laino
    • one year ago
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    ok!

  37. calculusxy
    • one year ago
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    Thank you i will make a new post

  38. Michele_Laino
    • one year ago
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    ok!

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