The slope of the given line is 4
The equation of a line is the change in rise over run of a line. From the given diagram, we can use the coordinate points below:
(3, 12) and (8, 32)
Slope = y2-y1/x2-x1
Substitute the coordinates
Slope = 32-12/8-3
Slope = 20/5
Slope = 4
Hence the slope of the given line is 4