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What is the expression which connects y and x when y is inversely proportional to x and x equals 9 y equals 7. and what is the value of y when x equals 21?
Wiki User
β 6y ago
x*y = k where k is a constant.When x = 9, y = 7 so k = 9*7 = 63
When x = 21, 21*y = 63 so y = 3.
Wiki User
β 6y ago
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