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22-02-2016
Mathematics

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when y varies directly with x , and y = 15 and x = 3,

what is the equation?

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Аноним Аноним

22-02-2016

The equation for direct variation is y = kx

k is the constant of variation.

15 = k(3)
15/3 = k
k = 5

The constant is 5

Answer: y = 5x

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