The slope of the line segment that represents the change in internet users from the year 2007 to 2009 is 5.00.
The formula for calculating the slope of a line is:
m = (y₂ - y₁) / (x₂ - x₁)
In this case, we are given the following information:
Year 2007: Internet users (y₁) = 220 million
Year 2009: Internet users (y₂) = 230 million
Therefore, we can plug these values into the formula to calculate the slope:
m = (230 million - 220 million) / (2009 - 2007)
m = 10 million / 2 years
m = 5 million/year