The reasons for its downward slope include Pigou's wealth effect, Keynes' interest rate effect, and the Mundell-Fleming exchange-rate effect.  
The reasons for its downward slope include Pigou's wealth effect, Keynes' interest rate effect, and the Mundell-Fleming exchange-rate effect.  Both the IS-LM model and the Mundell-Fleming model provide definitions for this concept, the latter of which involves consumption as a function of disposable income, investment as a function of the interest rate, government spending, net exports as a function of the real exchange rate, and the income or output.  FTP, identify this macroeconomic concept that tells the quantity of goods and services demanded at a given price level.
The reasons for its downward slope include Pigou's wealth effect, Keynes' interest rate effect, and the Mundell-Fleming exchange-rate effect.  
aggregate demand