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heathernelly

  • 3 years ago

Suppose that w and t vary inversely and that t =1/5 when w = 4. Write a function that models the inverse variation, and find t when w = 9. Would it be t=1/5w;4/45 or 4/5w;4/45?

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  1. hartnn
    • 3 years ago
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    inverse variation ---> wt = constant let wt=k put w=4, t= 1/5 and find k. ?

  2. heathernelly
    • 3 years ago
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    4/5? :/

  3. hartnn
    • 3 years ago
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    yes, wt = 4* (1/5) = 4/5 = k so your function is wt = 4/5 or t= 4/(5w) now to get t, when w=9, just put w=9 in t=4/(5w)

  4. heathernelly
    • 3 years ago
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    ooooh, so it would be 4/45?

  5. hartnn
    • 3 years ago
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    yes, absolutely :)

  6. heathernelly
    • 3 years ago
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    your awesome! :D thanks again! xx

  7. hartnn
    • 3 years ago
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    your awesome too ! :D welcome again ^_^

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