Use the graph below to explain the determination of equilibrium GDP by the aggregate expenditures-domestic output approach.At equilibrium C + Ig = Real GDP ($550 + $50 = $600).Why does the intersection of the aggregate expenditures schedule and the 45-degree line determine the equilibrium GDP?

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The Answer of Use the graph below to explain the determination of equilibrium GDP by the aggregate expenditures-domestic output approach.At equilibrium C + Ig = Real GDP ($550 + $50 = $600).Why does the intersection of the aggregate expenditures schedule and the 45-degree line determine the equilibrium GDP?

Use the Graph Below to Explain the Determination of Equilibrium