7.2.a
Use equivalent ratios displayed in a table or in a graph of the relationship in the coordinate plane to determine whether a relationship between two quantities is proportional.
Example Problems
At the market, 8 apples cost $4.
How much do 9 apples cost?
How much do 9 apples cost?
At the market, 5 light bulbs cost $9.
How much do 7 light bulbs cost?
How much do 7 light bulbs cost?
At a pet store, 8 dog treats cost $10.
How much do 9 dog treats cost?
How much do 9 dog treats cost?
Khan Academy ResourcesProportional relationshipsIdentify proportional relationshipsIntro to proportional relationshipsProportional relationships: bananasIs side length & area proportional?Proportional relationships: graphsProportional relationshipsIs side length & perimeter proportional?Proportional relationships: movie ticketsProportional relationships: spaghetti

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