The quantity demanded of a brand of food processors is 6000 per week when the unit price is $ 970. Every $ 40 change in price results in an inverse change in the quantity demanded by 500 units. The suppliers will not market any food processors if the unit price is $ 600 or less but are willing to supply 5000 units per week at a unit price of $ 1050. If both the supply and demand curve are known to be linear