Both lines on the graph represent proportional relationships. What is the constant of proportionality for each relationship? Explain how you know.

k = 3 and k = 1

Step-by-step explanation:

Given that the relationship is proportional then the equation relating the quantities is

y = kx ← k is the constant of proportion

To find k divide both sides by x , then

k =

For graph a use the point (2, 6 ), then

k = = 3

For graph b use the point (4, 4 ), then

k = = 1

final answer is : )