What is the constant of proportionality in this proportional relationship?
x: 2, 2 1/2, 3, 3 1/2
y: 5/2, 25/8, 15/4, 35/8
A. 4/5
B. 5/4
C. 4
D. 5
![What is the constant of proportionality in this proportional relationship x 2 2 12 3 3 12 y 52 258 154 358 A 45 B 54 C 4 D 5 class=](https://us-static.z-dn.net/files/d51/ebc548499d94112a7950c127aca76392.png)