ECON 200 Lecture Notes - Lecture 10: Demand Curve, Normal Good, Marginal Cost
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Law of demand -- market demand for a good. Keeping all other forces constant, if the price of a good rises, the quantity demanded will fall and vice versa. On a given demand schedule, quantity changes as a result of change in price. We can call this the effect of price on quantity (or the price effect ) But price is not the only force that affects how much consumers will purchase of a good. Income, laws & regulations, prices of related goods & services, location. When the price of a good rises (keeping all other forces constant) the quantity demanded falls (and vice versa). This is called a change in the quantity demanded of the good. When a force other than the price of the good changes, the whole demand behavior shifts (its location changes!). This is called a change in the demand for the good. Effect of income changes on the demand for a good: