What is true of the aggregate demand curve?

The aggregate demand curve represents the total quantity of goods and services demanded across all levels of an economy at various price levels. It typically slopes downward, indicating that as the overall price level decreases, the quantity of goods and services demanded increases. This inverse relationship is influenced by factors such as the wealth effect, interest rate effect, and exchange rate effect. Additionally, shifts in the aggregate demand curve can occur due to changes in consumer confidence, government policies, or external economic conditions.