A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

sloppycanada

  • one year ago

Write an appropriate direct variation equation if y = 27 when x = 9 Write an appropriate inverse variation equation if y = 2 when x = 9 If y varies directly as x, and y = 15 as x = -3, find y for the x-value of 4. If y varies inversely as x, and y = 5 as x = 6, find y for the x-value of 10.

  • This Question is Closed
  1. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Where are you stuck?

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

    The first two, I think I can take a stab at the second two since I did similar problems earlier, I just need someone to look the things over.

  3. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    y = kx =27 and x =9, then k =?

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

    k = 3?

  5. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yup, hence the required equation is y = 3x. Dat sit.

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

    Okay so, for the other one, it's the opposite. y = xk?

  7. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    hey, xk = kx

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

    oh yeah... okay.. x = yk?

  9. Loser66
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    same!! because yk = x , then y = (1/k)x , that is one of the form y = nx where n = 1/k.

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

    Oh yeah the curved graph with two lines is the inverse. And those equations are 1/x... so in our case.?

  11. 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.