y is inversely proportional to x when y=7 , x=9 work out an equation connecting y and x

Question

y is inversely proportional to x
when y=7 , x=9
work out an equation connecting y and x

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Peyton 5 days 2021-11-25T15:38:36+00:00 1 Answer 0 views 0

Answers ( )

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    2021-11-25T15:39:40+00:00

    Answer: y = 63/x

    Step-by-step explanation:

    This is variation, now to the question.

    y <> 1/x ——————–1

    the <> is called the constant of proportionality, which will now be replaced by a constant (k)

    y = k/x ——————- 2

    Given that y = 7 and x = 9, we now find k , then use it to form an equation to connect y and x.

    Back to 2

    7 = k/9, therefore

    K = 63. Now put thus back in equation 2

    y = 63

    x

    Therefore, the equation connecting y and x is

    y = 63/x.

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45:7+7-4:2-5:5*4+35:2 =? ( )