brainlymain brainlymain

22-02-2016
Mathematics

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PLEASE HELP
Which is the direct linear variational equation for the relationship? y varies directly with x and y = 12 when x = 4.

A. y = 2x + 4

B. y = 3x

C. y = x – 8

D. y = x + 8

Respuesta :

Аноним Аноним

22-02-2016

Direct variation equal is written as : y = kx

K is the constant of variation.

12 = k4
12/4 = k
k = 3

y = 3x

Answer: B. y = 3x

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