Because bacon and eggs are often eaten together, they are complements.

a. We observe that both the equilibrium price of eggs and the equilibrium quantity of bacon have risen.

What could be responsible for this pattern – a fall in the price of chicken feed or a fall in the price of pig feed? Illustrate and explain your answer.

b. Suppose instead that the equilibrium price of bacon has risen but the equilibrium quantity of eggs has fallen. What could be responsible for this pattern – a rise in the price of chicken feed or a rise in the price of pig feed? Illustrate and explain your answer.