Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Steph_Rawr352

  • 2 years ago

Check my answer? Write the equation of the line passing through point (2,-3) and is perpendicular to y=4x+7 in standard form. I got 4x+y=-11; is it right?

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

    no again...

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

    slope of given line ?

  3. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4

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

    yes, so slope of perpendicular line ?

  5. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4/1 ?

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

    the product of slope of perpendicular lines = -1

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

    so m1 * m2 = -1 m1 = 4, m2= ?

  8. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh 4!

  9. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    -4 my bad

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

    no, slope of perpendicular line will be negative *reciprocal*

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

    so m1*m2 = -1 4m2=-1 m2 = -1/4 ok ?

  12. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohk sorry I'm not really good at this I just learned this

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

    so now u have slope of required line and a point on it, which equation will u use ?

  14. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    point-slope form? y-y1=m(x-x1)

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

    thats correct! so what u get ?

  16. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y-(-3)=-1/4(x-2) ?

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

    correct :) now simplify....

  18. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y-(-3)=-1/4x - idk/: 0.5?

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

    (-1/4)(-2) = +2/4 = +0.5

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

    y-(-3) = y+3

  21. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh wait.. y+3 = -1/4x - 0.5 then would you add -1/4x to the left side? since I have to write it in standard form? ax+by=c?

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

    1) its y+3 = -1/4x + 0.5 2) yes., add 1/4 x , not -1/4 x

  23. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohk so .. 1/4x+y+3=0.5 then add subtract 3 on both sides?

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

    yes, correct

  25. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1/4x+y=2.5

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

    0.5-3 = -2.5

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

    or u could first multiply by 4 on both sides

  28. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh yeah.. sorry.. and oh ohk if i did that it would be x+y=2

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

    let me show you steps: y+3 = -1/4x + 0.5 y+1/4 x +3= 0.5 multiplying 4 on both sides 4y+ x + 12 = 2 now can u solve ahead

  30. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4y+x=14

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

    2-12=?

  32. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh whoops -10

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

    you will subtract 12 from both sides, right ?

  34. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes, sorry

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

    so finally, 4y+x=-10

  36. Steph_Rawr352
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah thank you though! (:

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

    welcome ^_^

  38. 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.