Witch table shows a proportional relationship between a and b

Answer:
Option B is correct.
Step-by-step explanation:
A proportional relationship is a relationship between two variables where the ratio between the two variables is always the same.
Divide b/a for each option, the option having same ratio for the complete tables have proportional relationship
a)
9/3 = 3
12/4 = 3
20/5 = 4
b)
25/20 = 5/4
30/24 = 5/4
40/32 = 5/4
c)
12/4 = 3
15/5 = 3
24/6 = 4
d)
4/3 = 4/3
9/6 = 3/2
12/16 = 3/4
So, Option B is correct.
Answer: Second Option
Step-by-step explanation:
It is said that two variables a and b are propocionales if when b increases then a increases in a constant rate.
That is, a and b are proportional if the quotient between b and a is always equal to a constant k.
[tex]\frac{b}{a}=k[/tex]
To know which of the tables shows a proportional relationship identify in which of the tables the division of b between a always is constant
You can verify that the table where the quotient of b enters a is always constant is in the second table
[tex]\frac{b}{a}=\frac{5}{4}[/tex]