Throughout this very challenging unit, you have had to combine your prior knowledge of Demand and Supply and look at our national economy from an aggregate level. In chapter 2, we learned that the three broad macroeconomic goals can be shown in one model, the AD / AS model. This model shows the price level (inflation) on the y-axis, RGDP on the x axis and employment can be determined by the changes of RGDP (they move in the same direction, which means that unemployment and RGDP move in inverse directions)