Answer:
[tex]k=10\ liters/container[/tex]
Step-by-step explanation:
The picture of the question in the attached figure
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]k=\frac{y}{x}[/tex] or [tex]y=kx[/tex]
Let
x ---> the number of containers
y ---> liters of water contained in the containers
Find the constant of proportionality k
[tex]k=\frac{y}{x}[/tex]
From the graph take the point (2,20)
substitute
[tex]k=\frac{20}{2}=10\ liters/container[/tex]
The equation is equal to
[tex]y=10x[/tex]
