Read the description of a proportional relationship. The Picture and Sound electronics store has hired Quinn to work in the warehouse. He uses a pulley with a hand crank to lift heavy boxes. There is a proportional relationship between the number of times Quinn turns the crank to lift a box, x, and the height the box has been lifted (in feet), y.

He turns the crank 10 times to lift a box 6 feet. Write the equation for the relationship between x and y.