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Identifying proportional relationships
Learn how to tell whether two quantities are proportional by thinking about equivalent ratios and drawing graphs.
Sal introduces the idea of a proportional relationship by looking at tables of values.
Sal answers the question by drawing a square and thinking about the relationship between side length and perimeter.
Sal answers the question by drawing a square and thinking about the relationship between side length and area.
Given a table of ratios, watch as we test them for equivalence and determine whether the relationship is proportional.
When going to the movies, is the price you pay proportional to the number of tickets you buy?
A proportionality problem about eating bananas
Practice telling whether or not the relationship between two quantities is proportional by reasoning about equivalent ratios.