Answer: A proportional relationship is one in which two quantities vary directly with each other. To Decide whether two quantities are in a proportional relationship, is by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
For Example, 2 × 2 = 4 , and 4 ÷ 2 = 2 ← which is an example of Proportional relationships.
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