Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

tinaballerina

  • 2 years ago

Which is the equation to the line passing through points (2, -7) and (5, -1)?

  • This Question is Closed
  1. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    y = 2x - 8 y = - 2x + 9 y = 2x - 11 y = - 2x + 6

  2. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    those are the answers.

  3. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    do u know how to find slope when 2 points are given ?

  4. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No

  5. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    The slope of the line through points (x1,y1) and (x2,y2) is given by : \(\huge m=\frac{y_1-y_2}{x_1-x_2}\) now,just put the values and find m.

  6. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    could u find m=... ?

  7. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    No, im having a difficult time, i think its due to the early-ness. haha

  8. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\huge m=\frac{y_1-y_2}{x_1-x_2}=\frac{-7-(-1)}{2-5}=...?\)

  9. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -6/-3

  10. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    m= -6/-3 = ..... ?

  11. Kainui
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It might be easier if you have a graphing calculator. Make a line that looks like: y=(2/3)x and then change the slope around a bit to figure it out and see why the slope is rise/run by going to the "trace" option on your calculator and trying things out, like when x=3.

  12. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    2

  13. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yes, m=2

  14. Compassionate
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Now use the first points given and the slope. Plug it into the equation: y - y1 = m(x - x1)

  15. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    now take any point, say (5,-1) and put it in y - y1 = m(x - x1)

  16. hartnn
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    x1=5,m=2,y1=-1 isolate y

  17. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    -_-

  18. Compassionate
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Tina, let me make it easier for you. y - y1 = m(x - x1) y - (-1) = 2(x - 5) <-- Solve for y

  19. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Good lord this is terrible. I feel so confused.

  20. Compassionate
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay. What are you confused with?

  21. tinaballerina
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Nothing. I think i'm going to skip this! I have to have it done by later tonight. I think im going to rest now haha thanks though:)

  22. Compassionate
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Bye.

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

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy

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.