Given :
the relation between garbage, G, produced by a city with population p
G is measured in tons per week, and p is measured in thousands of people.
When : p = 30,000 = 30 thousands , G = 11 tons each week
So, as there is a direct variations between G and p
The relation will take the form :
So, the constant k will be :
So, the relation will be :
So, the equation will be : G = 11/30 * p