Which table shows a proportional relationship between x and y?

a.x 1 2 3 4
y 6 8 10 12

b.x 2 4 7 8
y 6 10 21 24

c.x 40 50 60 90
y 8 10 14 18

d.x 4 7 8 10
y 2 3.5 4 5

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.