The equilibrium level of real GDP is found at the intersection of the aggregate schedule and the equilibrium line.

The equilibrium level of real GDP (Gross Domestic Product) is determined where the aggregate demand schedule intersects with the aggregate supply schedule. Here's a step-by-step explanation:

1. Aggregate Demand: This is the total demand for all goods and services in an economy. It is calculated as the sum of consumption, investment, government spending, and net exports.

2. Aggregate Supply: This is the total supply of all goods and services produced within an economy. It includes the supply of goods and services by all producers.

3. The Aggregate Demand and Supply Schedule: This is a graphical representation of the aggregate demand and supply in an economy. The aggregate demand curve slopes downwards from left to right, indicating that as the price level falls, the quantity of goods and services demanded increases. The aggregate supply curve, on the other hand, slopes upwards from left to right, indicating that as the price level rises, the quantity of goods and services supplied also increases.

4. Intersection of Aggregate Demand and Supply: The point where the aggregate demand and supply curves intersect is the equilibrium level of real GDP. At this point, the quantity of goods and services demanded equals the quantity supplied. This means that there is no excess supply or demand in the economy, and the economy is in a state of equilibrium.

5. Equilibrium Line: This is not a standard term in economics. It might refer to the line drawn at the equilibrium level of real GDP on a graph. It could also refer to the 45-degree line used in some models of economics, which represents all points where aggregate demand equals aggregate supply.

So, the equilibrium level of real GDP is found at the intersection of the aggregate demand schedule and the aggregate supply schedule, which could be represented by an equilibrium line.