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JohnCarney111

  • 3 years ago

2. Suppose that y varies directly with x and inversely with z, and y = 18 when x = 15 and z = 5. Write the equation that models the relationship. Then find y when x = 21 and z = 7. (1 point) Connections help????

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  1. JuanitaM
    • 3 years ago
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    for variation problems, you must first find the constant. the formula for direct variation is Y = KX formula for inverse variation is Y = k/Z so combine the two based on your problem Y = (KX)/Z plug in given values for y x and z to find k tell me what K is

  2. JohnCarney111
    • 3 years ago
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    k=6?

  3. JuanitaM
    • 3 years ago
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    correct

  4. JuanitaM
    • 3 years ago
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    now using that value of k use the same formula and solve for Y based on that x = 21 and z = 7 what did you get?

  5. JohnCarney111
    • 3 years ago
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    y=18?

  6. JuanitaM
    • 3 years ago
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    You are absolutely right!!!! Remeber those formulas and you can do any variation problem

  7. JohnCarney111
    • 3 years ago
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    thank you so much

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