Final answer:
The inflow of financial capital to the US during the 2008 crisis would decrease interest rates due to increased supply of capital, and appreciate the US exchange rate due to higher demand for US dollars.
Step-by-step explanation:
In the 2008 global financial crisis, an inflow of financial capital into the US economy would likely lead to a decrease in US interest rates and an appreciation of the US exchange rate. An increase in the supply of capital in the US financial system means that borrowers have more funds available, thus lowering the cost of borrowing, which is reflected in lower interest rates. Meanwhile, the higher demand for US dollars to invest in the US assets would cause the value of the dollar to increase in the foreign exchange markets, resulting in a stronger exchange rate.
Graphically, the supply curve for financial capital would shift to the right, leading to a lower equilibrium interest rate. In the foreign exchange market, the demand curve for US dollars would shift to the right, causing the dollar to appreciate. However, it's important to note that these are ceteris paribus assumptions, meaning they don't take into account other variables that might change and affect these outcomes.