The equation in the graph is y = (8/3)*x, the constant of proportionality is 8/3.
How to find the constant of proportionality?
The general proportional equation is written as:
y = a*x
Where a is the constant of proportionality.
To find the value of a, we first need to identify an ordered pair that lies on the graph of the line. We can use the graph to identify one point. There we can see the pair (3, 8), replacing these values we will get:
8 = a*¨3
Solving for a:
8/3 = a
The equation is:
y = (8/3)*x