Y varies directly as x and y =18 when x=1/2 write an equation that relates y and x

Question

Y varies directly as x and y =18 when x=1/2 write an equation that relates y and x

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Maria 3 hours 2021-10-14T02:25:13+00:00 1 Answer 0

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    2021-10-14T02:27:07+00:00

    Answer:

    y = 36x

    Step-by-step explanation:

    Given that y varies directly as x, then the equation relating them is

    y = kx ← k is the constant of variation

    To find k use the condition y = 18 when x = \frac{1}{2}, thus

    k = \frac{y}{x} = \frac{18}{\frac{1}{2} } = 36

    y = 36x ← equation of variation

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