Suppose y is inversely proportional to x. When x=20, then y=4. Find y when x=35.
The proportional constant k= ______
The function is: _____
The new value of y is: _______
~ : to represent sign of proportionality y ~ 1/x y = k/x x=20, y=4 4 = k/20 k = (20×4) = 80 y = 80/x x=35, y = 80/35 = 2.29 The proportional constant k = 80 The function is: y = k/x The new value of y is: 2.29
