Draw the Graph of xy = 20, x, y > 0. Use the graph to find y when x = 5, and to find x when y = 10.
We are given that xy
= 20
⇒ y = (20/x)
We can find different value of Y by taking values of x between 1 and 10
From the graph we get that at x = 5, y = 4, and to find y = 10, x = 2