Dominic has outgrown the bike he rode when he was small. So, for his twelfth birthday, his parents surprise him with a five-speed Blaze Rider 2000! Dominic has never had a bike with
multiple speeds before, and he is eager to learn how it works. He starts by testing the middle
speed.
There is a proportional relationship between the number of times Dominic pedals, x, and the
number of times the wheels rotate, y.
x (times Dominic pedals) y (times the wheels rotate)
2
2
5
5
6
6
7
7
Write an equation for the relationship between x and y. Simplify any fractions.
y =