Answer:
\(\frac{2}{3}\).
Step-by-step explanation:
We have been given an equation \(y=\frac{2}{3}x\). We are asked to find the constant of proportionality.
We know that two directly proportional quantities are in form \(y=kx\), where y is directly proportional to x and k is the constant of proportionality.
Upon looking at our given equation, we can see that \(k=\frac{2}{3}\), therefore, the constant of proportionality is \(\frac{2}{3}\) for our given equation.
