The market demand curve maintains the properties of the individual demand curves.

Question

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The market demand curve is derived by horizontally summing individual demand curves, therefore it maintains the properties of the individual demand curves. The market demand curve is derived by adding up the quantities demanded by all individuals at each price level, thus it maintains the same properties as individual demand curves, such as the law of demand and price elasticity.

The Market Demand Curve Maintains the Properties of the Individual