Discuss the short and the long-run impacts of the following scenarios on the interest rate (r) price level (P), and national income (Y) level, consumption, investment and real money balances, using the IS-LM model (diagram). Make sure you provide graphical analysis (IS-LM) with accurate labels, and narrative discussion on each scenario. a. A decrease in government purchase. - Discuss the short and long-run impacts clearly in one graph. - Minimum words requirement: 300 words b. A decrease in taxes - Discuss the short and long-run impacts clearly in one graph. - Minimum words requirement: 300 words