I need help on math
To help the environment and make some extra money, Shannon takes her empty cans to the Cash Not Trash recycling shop. The shop pays cash based on the total weight of the cans Shannon brings in for recycling. There is a proportional relationship between the weight (in pounds) of the cans Shannon brings into the shop, x, and the amount (in dollars) the shop pays Shannon, y.
Last month, Shannon brought 5 pounds of cans into the shop and was paid $2. Write the equation for the relationship between x and y.

Question

I need help on math 
To help the environment and make some extra money, Shannon takes her empty cans to the Cash Not Trash recycling shop. The shop pays cash based on the total weight of the cans Shannon brings in for recycling. There is a proportional relationship between the weight (in pounds) of the cans Shannon brings into the shop, x, and the amount (in dollars) the shop pays Shannon, y.
Last month, Shannon brought 5 pounds of cans into the shop and was paid $2. Write the equation for the relationship between x and y.

jhonyy9 · Answer

so ,,x" means the weight in pounds of the can 
the ,,y" means the amount (in dollars) the shop pays Shannon

- and given that last month  Shannon brought 5 pounds of cans into the shop and was paid $2.

so how can you write these using the ,,x" and the ,,y" ?