The Central Middle School girls' volleyball team is celebrating the end of their season with milkshakes. They think the best mil
kshakes use 3 pints of ice cream for every pint of milk. Their coach bought 1 gallon of milk and 9 different pints of ice cream. If they use up all of the ice cream, how many pints of milk do they have left?
The relationship here between the x and y values can be seen in an equation, y=x+3, since every y value is three more than its corresponding x-value. <span />