Answer:
Table C
Step-by-step explanation:
The variable x is directly proportional to y according to table
C because each of the variable x keeps increasing by the same factor which is 1.5. This factor is known as their constant of proportionality
If y is directly proportional to x, it is expressed as x ∝ y
x = ky where k is the constant of proportionality
When x1 = 8, y1 = 12
When x2 = 9, y2 = 13.5
When x3 = 18, y2 = 27
Since k = y/x
k = y1/x1 = y2/x2 = y3/x3
k = 12/8 = 13.5/9 = 27/18 = 1.5
This shows that they all have the same constant of proportionality which is 1.5
