The slope of a line that passes through the points (x1, y1) and (x2, y2) is computed as follows:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
then, the slope that passes through K(2,2) and S(5,4) is:
[tex]m=\frac{4-2}{5-2}=\frac{2}{3}[/tex]
Two lines are parallel if they have the same slope, then the slope of a line parallel to KS is 2/3
