Answer: Perfectly elastic; Downward sloping
Explanation:
The demand curve for the product of a firm in a competitive market is Perfectly elastic, and the demand curve for the product of a monopolist is Downward sloping.
The demand curve for products in a perfectly competitive market is a horizontal line indicating that it is perfectly elastic. The reason for this being that the demand curve is also the price that the market has decided to sell a product at and if any seller was to deviate from this price, their demand would drop.
In a Monopoly however, the demand curve to downward sloping to indicate that customers will demand more products if prices are lower. This is why monopolies usually have to reduce prices to make more revenue.
