Answer:
See Explanation
Explanation:
The options are not given; however, the solution is as follows;

Required
Determine relationships with the same constant of proportionality (k)

Divide both sides by 3



The relationship between y, x and k is:

Comparing
with
; then

Hence, any of the options with k=9 answers the question.
Take for instance:

Dividing both sides by 2 gives
and hence;
