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ework (CH 09) MPC-0.75 45-Degree Line A TOTAL EXPENDITURE (Billions of dollars) New AE Line 145 120 Now Equilisrum 180 AC Line 60 -03 120 160 180 180 20 REAL GOP (Hilions of dollars) In the first economy (with MPC = 0.5), the $20 billion decrease in investment causes equilibrium output to decrease by S billion. In the secor economy (with MPC = 0.75), the $20 billion decrease in investment causes equilibrium output to decrease by | $ billion. Therefore, a lower M is associated with a multiplier. Now, confirm your graphical analysis algebraically using the oversimplified multiplier formula