Start with the slope formula.
Slope formula can be read as the second y minus the first
y over the second x minus the first x.
So for this problem, the second y minus the first y would be
5 - 2 and the second x minus the first x would be 8 - 4.
5 - 2 over 8 - 4 is 3/4.
So the slope of the line that passes through these points is 3/4.