<P> While the aforementioned demand curve is generally downward - sloping, there may be rare examples of goods that have upward - sloping demand curves . Two different hypothetical types of goods with upward - sloping demand curves are Giffen goods (an inferior but staple good) and Veblen goods (goods made more fashionable by a higher price). </P> <P> By its very nature, conceptualising a demand curve requires that the purchaser be a perfect competitor--that is, that the purchaser has no influence over the market price . This is true because each point on the demand curve is the answer to the question "If this buyer is faced with this potential price, how much of the product will it purchase?" If a buyer has market power, so its decision of how much to buy influences the market price, then the buyer is not "faced with" any price, and the question is meaningless . </P> <P> Like with supply curves, economists distinguish between the demand curve of an individual and the market demand curve . The market demand curve is obtained by summing the quantities demanded by all consumers at each potential price . Thus, in the graph of the demand curve, individuals' demand curves are added horizontally to obtain the market demand curve . </P> <P> The determinants of demand are: </P>

What statement about the industrial revolution and capitalism is true