Demand and Revenue Curves:

From Figure, the total revenue (TR) curve for a price-taking firm is an upward-sloping straight line that passes through the origin meaning no revenue is earned by the firm can influence the price of its product by altering its supply and allowing the market to set the price or setting the price straight away and allowing the market to set the quantity sold.  It cannot do both simultaneously.   The former option is preferable.   A typical example of a price-maker to set the quantity sold.  It cannot do both simultaneously.  The former option is preferable. A typical example of a price-maker is the monopoly firm.