HOW PRICE AND QUANTITY CHANGE WHEN SUPPLY OR DEMAND SHIFTS
No Change in Demand Demand Increases Demand Decreases
  (No shift)   (Shifts to the right)   (Shifts to the left)
             
       
No Change in Supply P  unchanged P  higher P  lower  
  (No shift) Q  unchanged Q  higher Q  lower  
               
       
Supply Increases P  lower P  can't say P  lower  
  (Shifts to the right) Q  higher Q  higher Q  can't say  
               
       
Supply Decreases P  higher P  higher P  can't say  
  (Shifts to the left) Q  lower Q  can't say Q  lower