The curve that shows quantities of total real output that will be offered for sale at various price levels is called the aggregate supply curve.
The aggregate supply is also known as total real output, it is the total supply of goods and services produced within an economy at a given overall price in a given period.
The decrease in aggregate supply is caused by the increase in input prices. Thus, this is represented by a shift to the left of the short‐run aggregate supply curve because this curve is drawn under the assumption that input prices remain constant.
Hence, the aggregate supply curve shows the total quantity of output real GDP which the firms will produce and sell at each price level.
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