Given
The recipe for the smoothie is made up of 5 cups of strawberries and 2 cups of bananas.
For the point (1,2.5)
It means that from the graph showing a plot of the numbers of cups, with the number of strawberries cups on the y-axis and the number of banana cups on the x-axis, the 2.5 is for the number of cups for strawberries while 1 is the number of cups of banana.
We can also say that
For every 1 cup of banana, there should be 2.5 cups of strawberries.