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 ...
Proportional symbols can be added to graphs to show information about different places. The graph below plots life expectancy against income for each country. It also shows population size. Each ...
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