s Demand Curve Slope Downwareलाख दे एंटीमनी सिंह मार्जिनल यूटिलिटी दूसरा इनकम इफेक्ट सभी ट्यूशन इफेक्ट साइज ऑफ़ कंस्यूमर ग्रुप डिफरेंट यूजेस
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In economics, a demand curve is a graph depicting the relationship between the price of a certain commodity (the y-axis) and the quantity of that commodity that is demanded at that price (the x-axis). Demand curves may be used to model the price-quantity relationship for an individual consumer (an individual demand curve), or more commonly for all consumers in a particular market (a market demand curve).
An example of a demand curve shifting. D1 and D2 are alternative positions of the demand curve, S is the supply curve, and P and Q are price and quantity respectively. The shift from D1 to D2 means an increase in demand with consequences for the other variables
It has generally been assumed that demand curves are downward-sloping, as shown in the adjacent image. This is because of the law of demand: for most goods, the quantity demanded will decrease in response to an increase in price, and will increase in response to a decrease in price.[1] There are certain goods which do not follow this law. These include Veblen goods, Giffen goods, stock exchanges and expectations of future price changes. The Sonnenschein–Mantel–Debreu theorem describes the shape that a market demand curve can take more precisely.