Use the Keynesian cross model to predict the impact of an increase in government purchases on equilibrium GDP. State the direction of the change and give a formula for the size of the impact.
Use the Keynesian cross model to predict the impact of an increase in government purchases on equilibrium GDP. State the direction of the change and give a formula for the size of the impact.
Chapter11: Managing Aggregate Demand: Fiscal Policy
Section: Chapter Questions
Problem 2TY
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Transcribed Image Text:Use the Keynesian cross model to predict the impact of an increase in government
purchases on equilibrium GDP. State the direction of the change and give a formula for
the size of the impact.
An increase in taxes shifts the planned expenditure function downward. The change in
income is given by
AY=
ΔΥ=
-MPC
1-MPC
An increase taxes shifts the planned expenditure function upward. The change in income is given
by
-MPC
1-MPC
AY=
XAT
An increase in taxes shifts the planned expenditure function inward. The change in income is given
by
AY=
1
1-MPC
XAT
1
1-MPC
The direction of the shift is undetermined without knowing the slope of the PE function. The
change in income is given by
XAT
XAT
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