How are the short-run Phillips curve and the AS-AD model related?

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The short-run Phillips curve can be derieved from the short-run AS curve with some simple algebra. The first step is to replace the output variables in the AS curve with unemployment variables using Okun's Law. The second step is to change the price levels in period t with inflation rates between period t and period t-1. These steps are shown in the transparencies.

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