A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Write the equation of the line that passes through (2, 4) and (1, -3) in slope-intercept form.

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

    A. y = 7x - 10 B. y = 7x + 10 C. y = 7x + 18 D. y = 7x - 18

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

    @FireKat97

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

    This is the last one slope is 7

  4. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yupp

  5. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\LARGE \frac{y_2-y_1}{x_2-x_1}=slope\] Find the slope first

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

    its 7

  7. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\huge y-y_1=m(x-x_1)\] where m=slope (x1,y1)

  8. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yup, thats correct, now reapply the equation from earlier

  9. pooja195
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now use this

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

    i dont know how to get the intercept

  11. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you don't need to find the intercept, you just have to substitute any set of co-ordinates and the slope into the (y - y1) =m(x - x1) equation

  12. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The y intercept form is just the name of the form which follows this format y = mx + b

  13. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So thats how you have to re-arrange the equation once you sub your slope and co-ordinates in

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

    I dont know what b is though

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

    I dont get how to figure out if its 10 or 18

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

    4+3=7(2-1)

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

    Thats what i got what i plugges it in

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

    plugged*

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

    i just get 7=7

  20. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    But you only need to plug in one set of the co-ordinates, so either (2, 4) or (-1, 3) into x1 and y1

  21. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Just pick the set which looks to have the "easier numbers" so smaller numbers etc

  22. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    But it shouldn't matter which of the co-ordinates you choose

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

    okay so( x+3)=7(x-1)

  24. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yup, right hand side is correct, but with the left hand side, that should be a y, not an x

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

    whoops haha

  26. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    hahaha dw all good :)

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

    now what

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

    haha good!

  29. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So, now we can rearrange this equation to put it in the form of y = mx + b

  30. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so we want to move everything except the y to the right hand side

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

    Its A

  32. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yup :D

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

    Thank you!

  34. FireKat97
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    no problem :)

  35. 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.