Perfect competition side-by-side graphs: market and firm making an economic profit

An example figure from the Cost and Revenue Curves generator.

Side-by-side graphs with no numbers on the axes. Left, labeled Market: supply S and demand D crossing at a dot, with dashed lines to Pₑ on the Price axis and Qₑ on the Quantity axis. The dashed line at Pₑ runs across to the right graph, labeled Firm, where it becomes the horizontal price line D = MR = AR = P. On the firm’s graph of Price and costs against Quantity, MC, ATC and AVC curves, MC meeting the price line at a dot above qₑ, a green rectangle labeled Profit between the price line and a dashed line at ATC on the price axis, and arrows to dots labeled Shutdown point, at the lowest AVC, and Break-even point, at the lowest ATC. — A perfectly competitive market beside one of its firms. Market supply and demand set the price Pₑ, and the dashed line carries it across to the firm, where it is the horizontal line D = MR = AR = P. The firm produces qₑ, where MC meets the price line, and the shaded rectangle between the price and ATC out to qₑ is its economic profit. The shutdown point (the lowest AVC) and the break-even point (the lowest ATC) are marked where MC crosses them.

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