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11-01-2017
Mathematics

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Y is directly proportional to x, and y=56 when x=7. find the value of y when x=4.

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tantankoh tantankoh

11-01-2017

y=kx
when y=56, x=7
56=7k
k=8
when x=4
y=8(4)
y=32
value of y=32

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