A demand graph is a graphical representation of the level of consumer or business demand for goods and services over a certain period of time. By charting the number of products or services purchased or requested over various intervals, companies are able to identify patterns in consumer behavior and adjust their supply chain accordingly. This helps businesses ensure that they have the right amount of inventory on hand at all times, and also help them anticipate spikes and dips in demand. With detailed demand graphs, companies can make informed decisions about when to increase or decrease production and focus on strategies to maximize customer satisfaction.