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anonymous

  • one year ago

Does the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table. x 2 4 8 12 y 4 2 mc019-1.jpg 2/3 direct variation; y = 8/x direct variation; y = 8x inverse variation; xy = 8 inverse variation; y/x = 8

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  1. anonymous
    • one year ago
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    @LynFran

  2. anonymous
    • one year ago
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    @AngusV

  3. anonymous
    • one year ago
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    @LynFran

  4. LynFran
    • one year ago
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    whats mc019.jpg

  5. anonymous
    • one year ago
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    2/3

  6. anonymous
    • one year ago
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    I'm stumped on this also

  7. LynFran
    • one year ago
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    y=kx is direct variation y=k/x is an inverse variation

  8. LynFran
    • one year ago
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    so lets see

  9. LynFran
    • one year ago
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    when x=2 y=4 when x=4 y=2 when x=8 y=?? when x=12 y=2/3

  10. LynFran
    • one year ago
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    whats y when x=8

  11. LynFran
    • one year ago
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    im not seeing the value

  12. LynFran
    • one year ago
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    this is what im seeing y 4 2 mc019-1.jpg =====whats this value??? 2/3

  13. anonymous
    • one year ago
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    it is 1

  14. LynFran
    • one year ago
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    ok

  15. LynFran
    • one year ago
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    y=kx if its direct variation we will use when x=2 y=4 so 4=k2 4/2=k 2=k we will use when x=4 y=2 so 2=k4 2/4=k 1/2=k when x=8 y=1 1=k8 1/8=k as we see k is constantly changing so...this is not direct variation

  16. anonymous
    • one year ago
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    so what is it?

  17. LynFran
    • one year ago
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    y=k/x inverse variation when x=2 y=4 4=k/2 4*2=k 8=k when x=4 y=2 2=k/4 2*4=k 8=k when x=8 y=1 1=k/8 1*8=k 8=k so yes its inverse variation k=8

  18. LynFran
    • one year ago
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    |dw:1442973105994:dw|

  19. anonymous
    • one year ago
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    k=8?

  20. LynFran
    • one year ago
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    sub the value of k in to get answer

  21. LynFran
    • one year ago
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    yes 8

  22. anonymous
    • one year ago
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    xy=8

  23. LynFran
    • one year ago
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    correct

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