I need some help with some entry level macroeconomics work. Please see the questions below, and help me to answer these?

I need some help with some entry level macroeconomics work. Please see the questions below, and help me to answer these?If I could have them drawn out, it would help immensely. I have an exam next week, and I just need some clarity on how these should be done.

1.  Using Aggregate Demand and Aggregate Supply depict what will happen should the population decide to save more. (Rationalize and depict two correct answers on separate graphs)
2.  Using Aggregate Demand and Aggregate Supply depict what will happen should industry invest more in capital equipment.
3.  Using Aggregate Demand and Aggregate Supply depict what will happen should the government lower the personal income tax rate.
4. Using Aggregate Demand and Aggregate Supply depict what will happen should the Bank of Canada buy bonds in the open market.
5. Using Aggregate Demand and Aggregate Supply depict what will happen should the government increase corporate income tax rates.
6. Using Aggregate Demand and Aggregate Supply depict what will happen should the Bank of Canada lower the Bank Rate. (Rationalize and depict two correct answers on separate graphs)

Thanks for your time. I really appreciate any and all help. Have a wonderful day.