I have attached an image showing the complete question with the answer options.
Answer:
Option C: y = (3/6)x
Explanation:
We are told that the constant of proportionality is 1/2.
Now, in constant of proportionality we use the formula;
y = kx
Where k is the constant of proportionality.
Thus the equation is;
y = ½x
Now, since ½ is a reduced form, we can write ½ as 2/4 or 3/6 and so on.
From the options, we see an equation with; y = (3/6)x
Thus,it's the correct one as when broken down, 3/6 gives ½