12) Refer to Figure 17-1. Suppose that the economy is currently at point A on the short-run Phillips
curve in the figure above, and the unemployment rate at A is the natural rate. If the economy was to
move to point B, which of the following must be true?
A) The economy is producing a level of GDP equal to potential GDP.
B) Aggregate demand must have increased.
C) Equilibrium GDP at point B must be below potential GDP.
D) The Fed conducted expansionary policy to cause the move.
E) The Fed purchased treasury bills to cause the move.
13) According to the short-run Phillips curve, if unemployment is 3.2% and inflation is 1.3%, an increase
in the inflation rate might result in which of the following?
A) an increase in the unemployment rate to 3.4%
B) a decrease in the unemployment rate to 3.0%
C) a decrease in the demand for labor in the economy
D) a return to the original inflation rate of 1.3%
14) Which of the following best explains the negative slope of the short-run Phillips curve?
A) Weak growth in aggregate demand keeps the economy below potential GDP, so unemployment rises
but inflation falls.
B) Aggregate demand grows so quickly that the inflation rate rises as unemployment rises.
C) Long-run aggregate supply increases quickly enough that inflation falls as unemployment also falls.
D) Short-run aggregate supply increases at the same pace as aggregate demand increases so that
inflation and unemployment do not change.