<span>Calculate the amount of water in your tub with a few clicks of your calculator. There is no way to calculate the “average” tub size because average means knowing about every tub everywhere, but there are typical tub sizes. The best way to know how much water your tub holds is to measure your own tub. Use the calculations to administer your hot tub chemicals or to know how much Epsom salts to add for that relaxing soak.</span>
Vertical Line Test. A test use to determine if a relation is a function. A relation is a function if there are no vertical lines that intersect the graph at more than one point.