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6. The demand curve shows how price affects supply of a good/service, other things being equal.

  • False
  • True

7. An increase in the number of buyers causes

  • it dosen't shift the demand curve
  • to the left
  • to the right
  • down
  • up

8. Demand for a normal good is linked positively to changes in income.

  • True
  • False

9. What is the rule for substitute goods?

  • an increase in the price of one causes an increase in demand for the other.
  • a decrease in the price of one causes an increase in demand for the other.