Supply & Demand In supply (and demand) problems, y is the number of items the supplier will produce (or the public will buy) if the price of the item is x. For a particular product, the supply equation is y = 9x + 479 and the demand equation is y = - 5x + 745 What is the intersection point of these two lines? (-19,308) X Enter answer as an ordered pair (don't forget the parentheses). What is the selling price when supply and demand are in equilibrium? price = $ 14 x /item What is the amount of items in the market when supply and demand are in equilibrium? number of items = | 308 X