Suppose that you are provided with the following data for your country for a particular month: 200 million people are working, 2
0 million are not working but are looking for work, and 40 million are not working and have given up looking for work. The official unemployment rate for that month is:
Start at the extreme left of the line point is (-4,5). go down 1 and right 2 to get to (-2,4). since these are both lattice points -1/2 is the slope. use formula to confirm. (5-4)/(-4--2) = 1/-2 = -1/2