Page 424 15.2. What is aggregate demand? Consider the following graph. Assuming that the U.S. economy begins with an aggregate demand curve equal to AD1, click on the aggregate demand curve you would expect to see following a decrease in the value of the U.S. dollar. A line graph shows three parallel aggregate demand curves, A 1, A 2, and A 3. A 3 is to the left of A 1, and A 2 is to the right of A 1