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6. If y varies directly as x and y = 6 when x = 3. what is the equation of variation? A. y=3x C. y=18x B.y=2x D. y=2/x

with solution​

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6. If y varies directly as x and y = 6 when x = 3. what is the equation of variation?

B. y = 2x

SOLUTION:

y = kx

6 = k(3)

6 = 3k

3k/3 = 6/3

k = 2

The constant of variation is 2. Therefore, the equation of variation is y = 2x.

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