For each of the following, draw a diagram to show how the curve or curves should shift in the IS-LM model of a closed economy with fixed prices, and explain in a sentence or two the reason(s) for the shift(s).
(a) An increase in government purchases (G) financed by borrowing(T does not change)
(b) An increase in government purchases (G) financed by printing money
(c) An increase in government purchases financed by increasing taxes by the same amount.