Which tables show y directly proportional to x? Select all that apply.

توضیح

The pairs 1 to 4, 3 to 12, and 5 to 20 all have quotient 4, while the pairs 2 to 7, 4 to 14, and 9 to 31.5 all have quotient 3.5. The table beginning with 1 to 5 is the closest false set because its later quotients change even though both columns keep increasing.