Suppose that when the price of beef is $10/kg, the daily quanity of beef sold in Tesco, a British Grocery store, is 10,000 kg. Suppose further that if the price of beef rises to $12/ kg, the amount of beef falls to 8000 kg. Assuming that the demand curve in this market is linear, what is the equation of the demand curve faced by Tesco in this market if
Qd = C-(D)(Pd)
Qd = quantity demanded
Pd = Price Demanded
C = horizontal intercept
D = demand