A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

muscrat123

  • one year ago

The graph below shows the relationship between the number of months different students practiced tennis and the number of matches they won: Part A: What is the approximate y-intercept of the line of best fit and what does it represent? (5 points) Part B: Write the equation for the line of best fit in the slope-intercept form and use it to predict the number of matches that could be won after 13 months of practice. (5 points)

  • This Question is Closed
  1. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Nnesha

  3. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @jim_thompson5910

  4. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @ganeshie8 @Hero

  5. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @campbell_st

  6. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A where does the line cut the y-axis

  7. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

  8. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y axis is the vertical axis

  9. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i know but what do u mean cut?

  10. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    where it starts on the vertical axis

  11. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3?

  12. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    seems to be a bit more that half way between 2 and 4

  13. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    3.5?

  14. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok... part B, find the slope of the line

  15. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so part a is 3.5? and i have trouble finding slope

  16. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well you have 1 point (0. 3.5) find another point on the line.

  17. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (1,3)

  18. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I don't think (1, 3) is on the line... on the x axis go up x = 5 till you hit the line what is the point..?

  19. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1,3 is the second point

  20. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and 5,12

  21. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @triciaal @campbell_st

  22. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Nnesha

  23. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    great so you have 2 points (0, 3.5) and (5, 12) so how far from 0 to 5 this is the run and how far from 3.5 to 12 this is the rise

  24. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ?

  25. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    if you start at 0 and go to 5, have far did you go..? and if you start at 3.5 and go to 12 how far did you go..?|dw:1438916881622:dw|

  26. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    8.5 and 5

  27. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    great |dw:1438917057707:dw| slope is m = 8.5/5 the the equation of your line is y = mx + 3.5 just calculate m and substitute it into the equation

  28. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    what is m?

  29. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @teddydaddy23

  30. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    m is called the slope of the line... and its defined by m = rise/run you have a rise of 8.5 and a run of 5

  31. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what do i do?

  32. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    plz its 11:15 and i gotta get up at 6 and i have 8 more lessons to do right now tonight

  33. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @dreamio

  34. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @campbell_st

  35. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @i_am_a_dude

  36. campbell_st
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 8.5/5 = 1.7 so m = 1.7 the equation is y = 1.7x + 3.5 so substitute x = 13 and then calculate a y-value

  37. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the y-intercept is 1.7 @triciaal

  38. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @i_am_a_dude

  39. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    the y intercept is when x = 0 when x = 0 it is more than 2 glancing at the graph

  40. muscrat123
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so what is the y intercept?

  41. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    it represents the number of wins without practice

  42. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (5,12) and (1, 5) 7/4 12 = 7/4(5) + b (48-35)/5 = 2.6

  43. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    guess needs to be rounded can only use whole numbers so y-intercept 3

  44. triciaal
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y = m x + b y = (7/4) * 13 + 3 26

  45. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.