It is known that y is the inverse proportional function of X, when x = 2, y = 6. (1) write the functional relationship between Y and X; (2) find the value of y when x = 4

It is known that y is the inverse proportional function of X, when x = 2, y = 6. (1) write the functional relationship between Y and X; (2) find the value of y when x = 4

(1) Let y = KX ∵ when x = 2, y = 6 ∵ 6 = K2, the solution is k = 12 ∵ y = 12x (2). Substituting x = 4 into y = 12x, y = 124 = 3