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16shuston

  • one year ago

Will medal and fan. If x varies directly as y, and x=42 when y=7, find x when y=3

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  1. 16shuston
    • one year ago
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    all i need is the set up

  2. Nnesha
    • one year ago
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    equation for direct variation \[\huge\rm y=kx\] where k is constant of variation.

  3. Nnesha
    • one year ago
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    substitute x and y for their values solve for k

  4. anonymous
    • one year ago
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    Ok so you are going to do this: 42/7 = x/3 Now cross multiply 42*3 = 7x Solve for x

  5. 16shuston
    • one year ago
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    okay that makes sense. thank you

  6. anonymous
    • one year ago
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    126 = 7x x = 18 Medal? Please

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