X is directly proportional to ywhen x is 21, then y is 3, express x in terms of y then find the value of x when y is equal to 1, 2, 10

If x is 21 and y is 3, then presumably this means that:

x = 7y

Therefore when y is 1 x is 1/7, when y is 2, x is 2/7 and when it's 10, it is 1 and 3/7

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