kaybay1225 kaybay1225

30-04-2019
Mathematics

contestada

Find the equation of variation in which y varies directly as x and y=21 when x=7. Then find the value if y when x=12

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jyothi75 jyothi75

30-04-2019

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TheStranger TheStranger

30-04-2019

Answer:

y - 26

Step-by-step explanation:

y varies directly as x.

y = kx

y = 21 when x = 7.

21 = k (7)

k = 21 ÷ 7

k = 3

Therefore,

y = 3x

When x = 12,

y = 3(12)

y = 36

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