Why is the 45 degree line not considered to be 'real' AS curve???
Is It because of the assumptions we have taken line consumption and savings curve are linear, investment is independent of income level ???

Dear Student,
The aggregate supply curve depicts the quantity of real GDP  that is supplied by the economy at different price levels. The reasoning used to construct the aggregate supply curves differs from the reasoning used to construct the supply curves for individual goods and services. The supply curve for an individual good is drawn under assumption that input prices reamin constant. The aggregate supply curve, however, is defined in terms of their price level. Increases in the price level will increase the price that producers can get for their products and induce more output. Thats why 45 degree line is not used to draw the graph of AS.
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