You can find this because we know slopes that are parallel have the same slope. Since the original is just y = a number, we know the slope is 0 and therefore there will be no x. Since this next equation is parallel to that, it will also just be y = a number with no x.
Since in the new ordered pair, y = 5, that must be the equation that we use as it is also parallel.
18 liters of fruit punch. Orange Juice = 1/3 of 18 L = 6 L Pineapple Juice = 4 L Orange + Pineapple Juice = 6 L + 4 L = 10 L Club Soda = 18 L - 10 L = 8 L
