Compléter Module 28Version en ligne The Money Market - Fill-in-the-Blank (Part 2) par Zachary Foust 1 The liquidity preference model of the interest rate says that the interest rate is determined by the and for money . The money supply curve ( MS ) show the relationship between the quantity of money supplied by a and the interest rate . A central bank can increase or decrease the . Central banks usually increase or decrease the money supply through - , which are the buying or selling of Treasury bills . To increase or decrease the money supply , central banks can also via the discount window . Central banks can change to increase or decrease the money supply . Money market equilibrium is where MS and MD .