Answer:
C
Step-by-step explanation:
You are looking for when y divided by x is the same number per each row.
Choice A.. 4/2 doesn't equal 9/4 so not choice A
Choice B.. 4/3 doesn't equal 16/9 so not choice B
Choice C works because 12/4 = 15/5 = 18/ 6 ... all of these equal 3 so choice C is an answer
Choice D.. 4/1 doesn't equal 15/3 so not choice D
Choice C is the only one where you have y/x is the same per each row
