What is the constant of proportionality for the data in the table?
A: 3/4
B: 8/5
C: 5/8
D: 4/3

Answer:
B
Step-by-step explanation:
Constant of proportionality can be calculated by two point slope formula, slope=(y2-y1)/(x2-x1)=(64-40)/(40-25)=24/15=8/5=1.6