Answer:
Option C is correct
y = 15x
Step-by-step explanation:
Direct variation states that:
......[1]
then, the equation is in the form of:
, where k is the constant of variation.
From the given table :
consider any points;
x = 9 and y = 135
Substitute these in [1] we have;

Divide both sides by 9 we have;
15 = k
or
k = 15
then, the equation we have; y = 15x
Therefore, the constant of proportionality for the table and write in the form y = kx is, y = 15x