overall equilibrium - maintains equilibrium in both goods/money markets  

• shift in IS or LM curves >> new equilibrium
• solve for Y in IS, LM relations
  • set equations equal to each other to find IS-LM equilibrium
• cannot use interest rates to shift curves
  • interest rates = result of interaction between goods/money market

• LM curve
• IS curve
• equilibrium between goods and money markets
• LM, IS curves just explain both markets in terms of interest and output