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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 +…

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 +…
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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

asked
User Sakkle
by
7.8k points

1 Answer

3 votes
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
answered
User Pierre Arlaud
by
7.8k points
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