The Average Variable Cost (AVC) curve is a graphical representation of the cost of producing one unit of output in the short run. The AVC curve shows the average variable cost of production for each level of output.
The AVC curve is U-shaped because initially, as production increases, the cost per unit of output decreases due to economies of scale. However, as production continues to increase, the cost per unit of output begins to increase due to diminishing returns to variable inputs.
Therefore, the AVC curve slopes upwards after reaching a minimum point. The minimum point is the point of the curve where the cost per unit of output is the lowest. This point is also where the Marginal Cost (MC) curve intersects the AVC curve from below.
In summary, the AVC curve is U-shaped and slopes upwards after reaching a minimum point. The curve represents the average variable cost of production for each level of output, and it helps firms to make decisions about production levels and pricing.