Graph: Interest Rate versus Quantity of Money Explain why the Money Demand Curve is a downward sloping curve. Suppose the interest rate is at iA. Explain how firms and households attempt to satisfy their excess demand for money. What is the effect of their actions? Suppose the interest rate is at iB. Explain how firms and households attempt to dispose of their excess supply of money. What is the effect of their actions? Now suppose there is an increase in the transactions demand for money because of growth in real GDP. Beginning at i*, explain what happens in the money market. How is this shown in the diagram?