ayeeeitskateee
  • ayeeeitskateee
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. x y 4 6.4 7 11.2 10 16 13 20.8 Please show your work and give me an explanation. I have a test coming up and I am really stuck on these types of questions. I'd like to write this in my notebook for future reference and practice. :) Thanks! Will medal/fan as always.
Algebra
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ayeeeitskateee
  • ayeeeitskateee
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. x y 4 6.4 7 11.2 10 16 13 20.8 Please show your work and give me an explanation. I have a test coming up and I am really stuck on these types of questions. I'd like to write this in my notebook for future reference and practice. :) Thanks! Will medal/fan as always.
Algebra
jamiebookeater
  • jamiebookeater
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ribhu
  • ribhu
y=kx
ayeeeitskateee
  • ayeeeitskateee
As I said, please give an explanation and show your work. I don't want just an answer. I like to learn!! Thank you though.
ayeeeitskateee
  • ayeeeitskateee
I'm really not sure how to do it at all. :(

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ribhu
  • ribhu
okay.. put 6.4=4*k
ayeeeitskateee
  • ayeeeitskateee
* means multiply, right? Or no?
ribhu
  • ribhu
yes its multiply....and you can do this calculation for all the sets.. then check if you get a consistent k.. if k is same throughout.. then y is linearly dependent
ayeeeitskateee
  • ayeeeitskateee
Okay, I think I got it.
ribhu
  • ribhu
okay no problem.. may you do well in your test
ayeeeitskateee
  • ayeeeitskateee
Thank you!
ayeeeitskateee
  • ayeeeitskateee
@ribhu Hey, I wanted to ask a question. When it says "write the equation" what would the equation be? I figured out that they all equal 1.6, so thank you. but i don't know what it means by equation.
Nnesha
  • Nnesha
y = kx where k is the constant of variation k =1.6 in this question so replace k with 1.6 that would be the equation
ayeeeitskateee
  • ayeeeitskateee
Okay, thanks! @nnesha

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