Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ihavemathquestions Group Title

Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

  • one year ago
  • one year ago

  • This Question is Closed
  1. ihavemathquestions Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

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

    please :(

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

    If y varies directly with x, then all the ratios will be the same. Here is an example if y is 2 when x is 1 and y is 4 when x is 2 and y is 6 when x is 3, then this shows direct variation. K=y/x. Now go back and determine if the numbers on your chart vary this way. In my example, you will notice they all vary by 2. If the y value is a same multiple of x for every x and y in your chart, then that is a direct variation.

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

    whats the answer?

    • one year ago
  5. max0236 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So you have to find the constant variation and write the equation \[\frac{ y }{ x } = \frac{ 11 }{ 7 }=\frac{ 13 }{ 8 }=\frac{ 15 }{ 9 }=\frac{ 17 }{ 10 }=?\]From what I can see it does not seem to have any variation. for example \[\frac{ 6 }{ 3 }=\frac{ 2 }{ 1 }=\frac{ 4 }{ 2 }= \frac{ 12 }{ 6 }=2\] here the y varies directly with x. The constant of variation is 2. The equation is y = 2x.

    • one year ago
  6. max0236 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A linear function written in the form y = kx , where k is not equal to 0 represents direct variation. The slope, k, is constant. The constant, k , is often referred to as the constant of variation. You can write the constant of variation as a ratio y : x . And unless someone else has any ideas I go with no variation that's the best I can do

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

    Max you are correct. 13/8 does not equal 11/7

    • one year ago
    • Attachments:

See more questions >>>

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.