Answer:
1.6
Explanation:
To find the constant of proportionality for the given point (5, 8), we need to have more information about the relationship between the two variables.
If the relationship is given as y = kx, where k is the constant of proportionality, we can find k by substituting the given point (5, 8) into the equation:
8 = k * 5
Solving for k, we get:
k = 8/5 = 1.6