From the graph, point M shows that the marginal cost (MC) is cutting the average cost (AC) at its minimum point. This means that the cost of producing each additional unit of output (MC) is equal to the average cost of producing each unit (AC) at the point where AC is at its lowest.
In other words, at point M, the cost of producing one more unit of output is the same as the average cost of producing all the units up to that point. This indicates that the firm is operating at its most efficient level of production, where it is able to produce output at the lowest possible cost.
In summary, point M shows that the marginal cost is cutting the average cost at its minimum point, indicating that the firm is operating at its most efficient level of production.
