According to the principles of demand, what is expected regarding demand curves?

Demand curves represent the relationship between the quantity of a good that consumers are willing to purchase and the price of that good. Each consumer has unique preferences, incomes, and circumstances that influence their willingness to pay for a good at various price points. Therefore, demand curves will differ among consumers because individual tastes and budget constraints shape how much of a product someone is willing to buy at different prices.

For example, a consumer with a higher income may be willing to purchase more of a luxury item compared to a consumer with a lower income, who may buy significantly less or none at all. Moreover, differences in consumer preferences for a product can lead to variations in demand curves, as some individuals place a higher value on a good than others. This variability is why, in microeconomics, it is accurate to state that demand curves differ between consumers, reflecting the diverse ways in which individuals respond to price changes.