Is the volume of water increasing or decreasing here? what is its rate of increase or decrease in liters per hour? coordinate plane with x-axis labeled number of hours and y-axis labeled volume in liters. graph of a line contains the following points: (1, 2) and (3, 1.5)
The volume is decreasing here .
The rate of change = -0.25
Given: In a graph , coordinate plane with x-axis labeled Number of Hours and y-axis labeled Volume in Liters.
The graph of a line contains the points: (1, 2) and (3, 1.5)
From the points, change in volume = change in y
⇒ Change in volume =
Change in time = change in x
⇒ Change in hours=
The rate of change for a graph is given by:-
Since, the rate of change is negative , therefore, the volume of water decreases.
Rate of decrease is 0.25 l/h
First the volume of water is decreasing on this diagram.
On the diagram, the author marked two points.
On the horizontal axis we have points marked 1 and 3 in hours. When we subtract 3 - 1 = 2 hour, we get interval of time. On the vertical axis we have points 2 and 1.5, when we subtract 2 - 1.5 = 0.5 liters we get decreasing in liters. Finally when we divide hours and liters we get
For one hour water decrease 0.25 liters.
God with you!!!