Which tables show y directly proportional to x? Select all that apply.
Pairs (1, 4), (3, 12), and (5, 20)✓الإجابة الصحيحة
Pairs (1, 5), (2, 9), and (3, 13)
Pairs (2, 7), (4, 14), and (9, 31.5)✓الإجابة الصحيحة
Pairs (3, 8), (6, 15), and (12, 29)
الشرح
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.