Using graph, find the quantity when cost is Rs 8.
5 units
4 units
3 units
6 units
From the graph, it is clear that the cost of 4 units is Rs 8.
Using graph, find the cost when quantity is 3 units.
The cost of per litre of milk is Rs 15. Draw the graph for the relation between the quantity and cost. Hence, find
1. The proportionality constant
2. The cost of 3 litres of milk.