Explain why each of the following statements is True, False, or Uncertain according to economic principles. Use diagrams where appropriate. It is the explanation that is important.

A1-1. Since demand curves are downward sloping, we would never see an increase in price accompanied by an increase in the equilibrium quantity traded in a market.

A1-2. An increase in consumer incomes will lead to an increase in the prices of all grocery store items.

Please answer and write neatly please thank you. (very confused)