Answer
The slope of 4207.4 represents the yearly increase in US dollars (since it is positive) in the average income of an American woman for each year after the year 2005.
Work Step by Step
RECALL:
$\\\\$The slope-intercept form of a line's equation is $y=mx+b$ where m=slope.
$\\\\$This means that the slope of the given equation is $4207.4$.
