Suppose that the revenue y from selling x units of a certain commodity is given by the formula y = 6x. (Revenue is the amount of money received from the sale of the commodity.) The line y = 6x intersects the line of cost, y = 5x + 4000, at the point (4000,24000). What interpretation can be given to the value of the x-coordinate of the point of intersection? When 4000 units are produced, the revenue equals cost. The revenue and cost curves are shown to the left. Since profit= (revenue) - (cost), the company will make a profit only if its level of production the x-coordinate of the curves' point of intersection. revenue cost Q