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ayeeeitskateee

  • one year ago

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.

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  1. ribhu
    • one year ago
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    y=kx

  2. ayeeeitskateee
    • one year ago
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    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.

  3. ayeeeitskateee
    • one year ago
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    I'm really not sure how to do it at all. :(

  4. ribhu
    • one year ago
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    okay.. put 6.4=4*k

  5. ayeeeitskateee
    • one year ago
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    * means multiply, right? Or no?

  6. ribhu
    • one year ago
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    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

  7. ayeeeitskateee
    • one year ago
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    Okay, I think I got it.

  8. ribhu
    • one year ago
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    okay no problem.. may you do well in your test

  9. ayeeeitskateee
    • one year ago
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    Thank you!

  10. ayeeeitskateee
    • one year ago
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    @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.

  11. Nnesha
    • one year ago
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    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

  12. ayeeeitskateee
    • one year ago
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    Okay, thanks! @nnesha

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