A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

What is the equation of the line, in point slope form, that passes through the given point and has the given slope? point: (8,-8) and slope 3 a. y-8=3(x+8) b. y+8=3(x+8) c. y-8=3(x-8) d. y+8=3(x-8) What are the intercepts of the equation? 5x+3y=15 what is the equation of the line perpendicular to the line y= 4/9 x - 2 that passes through point (4,3) a. y= -4/9 x -2 b. y= 9/4 x + 6 c. y= -9/4 x + 12 d. y= -9/4 x - 12 i really need help, please help

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

    ok lets start with the first question

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

    okay

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

    we are given points (8,-8) and slope 3 to put in point slope form|dw:1441393907189:dw|

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

    so would i distribute ?

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

    yes

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

    only the negative sign

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

    which option would we get?

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

    hold on oneee second im almost done

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

    wait so for y-(-8) how woould i distribute that, would it be just be -8y?

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

    |dw:1441394211850:dw|

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

    so it would be 8y= 3x - (-) 24?

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

    no ... u just need to distbute the 2 negative signs here|dw:1441394401381:dw|

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

    ohhhhhh okay

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

    i this case to match the given options the 2 negatives will make positive when....

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

    so 1st question answer??

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

    its y+8 = 3 (x-8) so D

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

    yes

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

    thank you

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

    what is the equation of the line perpendicular to the line y= 4/9 x - 2 that passes through point (4,3) Refer to the attachment from Mathematica.

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

    i dont understand that @robtobey

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

    question 2 intercepts to find the x-intercept we let y=0 to find the y-intercept we let x=0 but first we solve the given equation.. 5x+3y=15 lets solve for y 3y=15-5x y=(-5x+15)/3 now find the x intercept.... 0=(-5x+15)/3

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

    you took the 3 away from y to solve for it butbwhy did you put it into the equation to divide. dont we cancel something out?

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

    since the 3 was being multiplied to y....3y ...to get the y term alone we divide by 3...and since its an equation...what we do to the left side we must do the same to the right side ...

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

    ohh okay okay i gotchu

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

    so wats the x-intercept?

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

    0?

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

    nope

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

    3?

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

    0=(-5x+15)/3

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

    i give up

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

    0*3=(-5x+15)/3*(3)...the 3 will cancel on the right side 0=-5x+15 0+5x=-5x+5x+15 5x=15 x=15/5 x=3 the x-intercept (3,0)

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

    okay i understand it better i guess its still a little confusing but ill look over some more later

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

    lets solve the y-intercept y=(-5(0)+15)/3 y=(0+15)/3 y=15/3

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

    so the y-intercept is?

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

    would it be 5

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

    plz put it in point form

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

    like (x,y)

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

    okay soo (0,5)

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

    yes

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

    yayy

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

    Do u want me to do the 3rd question...or..its ok...

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

    yeah because the way that guy did it really confused me

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

    ok when two lines are perpendicular their slopes=-1 in other words the product of there slope =-1

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

    our equation y=4/9x-2 with point (4,3)

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

    can u tell me the slope for that equation

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

    no because i have no clue whats going on

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

    y=mx+b where m is the slope and b is the y-intercept

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

    m is 4/9x and b is -2?

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

    m=4/9

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

    so |dw:1441396731186:dw|

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

    whats our new slope?

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

    would it be -4/9?

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

    |dw:1441396920476:dw|

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

    |dw:1441397063320:dw|

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

    so it would be -9/4x

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

    so we have our new slope m=-9/4 and points (4,3)

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

    would the answer be c?

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

    yes

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

    do u have any question?....

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

    no, thank you so much for helping me !!!

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

    ok welcome

  62. 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.