 
Lenny D. answered  01/10/20
Former Tufts Economics Professor and Wall Street Economist
The Demand Curve is Horizontal. The competitive firm can not influence price by selling any more or any less.If I am selling hotdags at a Phillies game right next to 50 other vendors and I decide to sell only 50 Hot dogs and head home early it will have no impact on the price the other 50 vendors charge
 
     
             
                     
                    