Since the slope of a downward-sloping demand curve is constant, the price elasticity of demand does not change when moving along this line

The two basic approaches that a country can take as a means to achieve free trade are the

a. unilateral approach and the multilateral approach. b. short-run approach and the long-run approach. c. continental approach and the global approach. d. industry approach and the security approach.

If good A and good B are substitutes, then the cross price elasticity of demand of good A for a change in the price of good B is

A. zero. B. negative but less negative than -1. C. positive. D. negative and more negative than -1.