The determinant of demand or supply that has changed

Identify the determinant of demand or supply that has changed (something like the # of firms has decreased). Then show on the graph how the given situation affects the market for the specific good by shifting either supply, demand or both. Label the new equilibrium price and quantity on the graph as P2 & Q2 and list how both the equilibrium price and quantity change (increase/decrease, etc.) as the result of this change in the space provided. If you do not think there is a shift, then determine what has changed and how this impacts the market