Business: Phillips Curves Unemployment and inflation are inversely related, with one ris...

Business: Phillips Curves Unemployment and inflation are inversely related, with one rising as the other falls, and an equation giving the relation is called a Phillips curve after the economist A. W. Phillips (1914–1975).

Between 2000 and 2010, the Phillips curve for the U.S. unemployment rate x and Consumer Price Index (CPI) inflation rate y was where x and y are both in percents. Find the derivative of this function at each x-value and interpret your results.

a. 3 percent

b. 8 percent