In this graph, 𝑥 and 𝑦 are directly proportional. This means that when 𝑥 doubles, 𝑦 also doubles, and when 𝑥 triples, so does 𝑦. In fact, for all coordinates on this line, you could multiply or ...

When two quantities are in direct proportion, as one increases the other does too. We can display this relationship in a graph. Two quantities that are in direct proportion will always produce a ...