When the price of a necessity increases, demand is likely to be <u>constant </u>because consumers <u>need </u>that product to survive. However, when the price of a luxury good increases, consumers may <u>not buy it</u> because the good is not crucial to survival. Thus, the demand would be <u>decreasing.</u>
Explanation:
Changes in prices do not affect the demand for necessary goods in price. Consumers need products to survive. Luxury goods are not a necessity for life. When the price goes up, the demand goes down.