4. (Economics Powertool graph paper required) In the Keynesian cross, assume that the consumption function is given by C(Y – T) = 1425 + 0. 72(Y – T') The planned investment function is I(r) 1800 – 130r and government purchases and taxes are both 120. a. Suppose r = 8. Graph the Keynesian cross where Y goes from 0 to 10,000. Be sure to label the axes and the planned expenditure function as PE. b. What is the equilibrium level of income? Show this on your graph as Yo. c. Make a high resolution graph of the Keynsian cross where the Y-axis goes from 7900 to 8000. Be sure to label the axes and the planned expenditure function as PE,.

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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4. (Economics Powertool graph paper required) In the Keynesian cross, assume that the
consumption function is given by
C(Y – T) =
1425 + 0. 72(Y –T)
The planned investment function is
I(r) =
1800 – 130r
and government purchases and taxes are both 120.
a. Suppose r = 8. Graph the Keynesian cross where Y goes from 0 to 10,000. Be sure to
label the axes and the planned expenditure function as PE,.
b. What is the equilibrium level of income? Show this on your graph as Yo.
c. Make a high resolution graph of the Keynsian cross where the Y-axis goes from 7900
to 8000. Be sure to label the axes and the planned expenditure function as PE.
Transcribed Image Text:4. (Economics Powertool graph paper required) In the Keynesian cross, assume that the consumption function is given by C(Y – T) = 1425 + 0. 72(Y –T) The planned investment function is I(r) = 1800 – 130r and government purchases and taxes are both 120. a. Suppose r = 8. Graph the Keynesian cross where Y goes from 0 to 10,000. Be sure to label the axes and the planned expenditure function as PE,. b. What is the equilibrium level of income? Show this on your graph as Yo. c. Make a high resolution graph of the Keynsian cross where the Y-axis goes from 7900 to 8000. Be sure to label the axes and the planned expenditure function as PE.
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