How many points of the form (x,y), where both coordinates are positive integers, lie below the graph of the hyperbola xy=16?
If x= 1, y = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 12,13,14,15
If x = 2, y = 1, 2, 3, 4, 5, 6, 7
If x = 3, y = 1, 2, 3, 4, 5
If x = 4, y = 1, 2, 3
If x = 5, y =
...
+81 
