Khan Academy

Supporting grades: 7

Description: Understanding what a constant of proportionality is and how to identify it in an equation. So let's say we're trying to make some type of baked goods, maybe it's some type of muffin, and we know that depending on how many muffins we're trying to make, that for a given number of eggs, we always want twice as many cups of milk. So we could say cups of milk, cups of milk, that's going to be equal to two times the number of eggs. This is a proportional relationship between the cups of milk and the number of eggs.

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