Have students draw graphs to explain what happens to the equilibrium interest rate in each of the following cases:

$1.$ A breakthrough in medical technology results in many hospitals wanting to buy new equipment.

$2.$ The government budget deficit is reduced by $50\%.$

$3.$ Foreign investors buy residential property in the United States.

$4.$ People around the world are worried about financial stability in their countries and choose to move their wealth to U$.$S$.$ financial markets.