Draw a correctly labeled loanable funds graph that shows

Question

How would I draw these graphs?

Draw a correctly labeled loanable funds graph that shows what happens to real interest rates for each of the following situations: (You will have 3 graphs)

1. The government borrows money to fund a war.
2. Private investors become more optimistic about the economy.
3. The government raises personal income taxes (do not consider the change in consumer saving).