Answer :
In the relationship y=4/5x the constant of proportionality is 4/5
In proportional relationships, the general expression is y=ax, where a is the constant of proporcionality, in this case a has a value of 4/5
In the relationship y=4/5x the constant of proportionality is 4/5
In proportional relationships, the general expression is y=ax, where a is the constant of proporcionality, in this case a has a value of 4/5