When the price elasticity of demand for a good equals A) 0, ...

[Sufayan.ah]

When the price elasticity of demand for a good equals
 
  A) 0, the demand curve is vertical.
  B) 0, the demand curve is horizontal.
  C) 1, the demand curve is vertical.
  D) 1, the demand curve is horizontal.

Question 2

The demand for a good increases when the price of a substitute ________ and also increases when the price of a complement ________.
 
  A) rises; rises
  B) rises; falls
  C) falls; rises
  D) falls; falls

[aliotak]

Answer to Question 1

A

Answer to Question 2

B