Economics

Economics in one picture: the supply and demand graph. Demand shows how much buyers want at each price, supply shows how much sellers will offer, and where the two curves cross you get the market price and quantity. Almost every MBA economics question comes back to this graph, so it pays to know it cold. Watch Supply and Demand Curve Shifts to see the difference between moving along a curve and shifting the whole curve, and how each shift pushes equilibrium price and quantity up or down.