Use similar triangles to determine the slope of the line. Write your answer in fraction form

(0,0), (2,1), (4,2), (6,3), (8,4)

The slope of the line can be determined by looking at the change in y-coordinates over the change in x-coordinates between two points on the line.

Using the points (0,0) and (2,1):
Change in y-coordinates: 1 - 0 = 1
Change in x-coordinates: 2 - 0 = 2

The slope between these two points is 1/2.

Since the line passes through all the points given, the slope of the line is 1/2.