I need help with these problems.

For a particular commodity, draw a graph which shows an equilibrium price of $7 and equilibrium quantity of 40 units using the typical linear supply and demand curves. Use your graph to answer the following questions. a. Suppose the government mandates that nobody sells above the price of $4 (i.e., the case of a price ceiling). Explain the effect this government supported maximum price would have on the market. (Points: 10) b. Suppose now that the government mandates that nobody sells below the price of $10 (i.e., the case of a price floor). Explain the effect this government supported minimum price would have on the market. (Points: 10)