Income elasticity of demand (video) | Khan Academy
https://www.khanacademy.org/economics-finance-domain/ap-microeconomics/unit-2-supply-and-demnd/25/v/income-elasticity-of-demand
WEBLearn about income elasticity of demand, which measures how sensitive quantity demanded is to changes in income. Compare normal goods, where demand increases with income, to inferior goods, where demand decreases as income rises. Finally, you'll learn that elasticity isn't limited to price, as other factors can affect supply and demand. …
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