Step-by-step explanation:
Take the first value of y i.e = 1
if 3 is multiplied with the value of y we get the first value of x
y=1
x=3(1)
=3y
Similarly, again when y=2
x=3×2=6
Again taking y=4
x=3×4=12
Therefore, we conclude that,
x=3y
or,y=1/3x
option D