Suppose without government intervention, the equilibrium price and quantity are $8 and 2 unit hours (unit could be in thousands/millions) of usages of ChatGPT.

a. Scenario 1: Let a government body impose a fixed tax $2 on OpenAI (the producer of ChatGPT) to discourage the usages of ChatGPT. As a result, the new equilibrium price is $9, and the new equilibrium quantity is 1. 

Tell me, how the new equilibrium price and quantity is calculated?