Find the values of b such that the system 
has no solution.
Definitions:
Duopoly Outcome
The result or consequence of a market structure where two companies dominate the supply of a product or service.
Price-fixing Agreement
An illegal arrangement in which businesses agree on prices of their goods or services, undermining competition.
Market Structures
The organizational and other characteristics of a market that influence the nature of competition and pricing.
Oligopolistic Industry
A market structure characterized by a small number of firms that dominate the market, leading to competitive yet interdependent pricing and marketing strategies.
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