At a price of $\$ 1.94$ per bushel, the supply of corn is 9,800 million bushels and the demand is 9,300 million bushels. At a price of $\$ 1.82$ per bushel, the supply is 9,400 million bushels and the demand is 9,500 million bushels.
(A) Find a price-supply equation of the form $p=m x+b$.
(B) Find a price-demand equation of the form $p=m x+b$.
(C) Find the equilibrium point.
(D) Graph the price-supply equation, price-demand equation, and equilibrium point in the same coordinate system.