# 'IS-LM', 'Multipliers', and other Basic Relationships

BRINNER 1 902mit07.ppt Aggregate Supply & Demand Lecture 8 The Reduced Forms of the 7 Behavioral Equations

C=C ( G, T, i, GNPW ) I = I ( G, T, i, GNPW ) M = M ( G, T, i, GNPW ) X = X ( G, T, i, GNPW ) GNP = C+I+X-M +G = GNP ( G, T, i, GNPW ) YD = GNP - T RP = RP ( GNP) = RP( G, T, i, GNPW ) BRINNER 2 902mit07.ppt Aggregate Demand

BRINNER 3 902mit07.ppt Demand curves in economics traditionally refer to relationships between the quantity demanded and the price of the good or service In macroeconomics, the aggregate demand curve...is nothing more than the intersections of the IS-LM curves for different price levels. Or, it traces the reduced form equation for GDP at different price levels. Therefore, the AD curve shows the equilibrium output associated with each price. Aggregate Demand

BRINNER 4 902mit07.ppt The aggregate demand curve is the intersection of the IS-LM curves for different price levels. It shows the equilibrium output associated with each price. How do price changes affect IS:goods market? How do price changes affect LM:money market? Can you conclude then how they will affect the equilibrium points? BRINNER 5

902mit07.ppt IS - LM:Reactions to Higher Prices GNP=GNP(i,G,T,GDPW) i= Interest Rate i If P1>P0 : GNP for P1 =L( M/p, GNP ) GNP

for P0 Aggregate Demand BRINNER 6 902mit07.ppt The aggregate demand curve is the intersection of the IS-LM curves for different price levels. It shows the equilibrium output associated with each price. P= Price Level GDP = Output / Spending

Aggregate Supply The aggregate supply curve is the level of domestic output that producers will supply given a price level for their output. P= Price Level GDP = Output / Spending BRINNER 7 902mit07.ppt

Aggregate Supply BRINNER 8 902mit07.ppt aggregate supply:domestic output given a price level for domestic output. How will it shift if the international price of oil rises and the domestic output price ( P ) doesnt? P= Price Level GDP = Output / Spending

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