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a demand schedule is a table showing the relationship between the price of a good and the quantity demanded , but a demand curve is a graph showing the relationship between the price of a good and the quantity demanded.
a change in demand is a movement along the demand curve, and a change in quantity demanded is a shift in the demand curve
Demand Curve
Change in demand is subjective, it could be increase or decrease in the qauntity of good or services asked for, while change in quantity demand is objective, it refers to actual quantity/amount of good or seevices requested /demanded .
Demand refers to the entire relationship between the prices and the quality of the product. Quality demand refers to one particular point on the demand curve.
quantity supplied
Demand refers to how much (quantity) of a product or service is desired by buyers. The quantity demanded is the amount of a product people are willing to buy at a certain price; the relationship between price and quantity demanded is known as the demand relationship. Supply represents how much the market can offer.
supply
Law of demand is behind the downward sloping of demand curve,i.e. inverse relationship between price and quantity demanded.
Demand is the best answer
a demand curve is a single curve which slopes downwards from left to the right indicating an inverse relationship between price and quantity demanded. a demand schedule is a table which gives the quantity demanded at each range of prices.
Demand curve is slope downward because of inverse relationship between price and quantity.