The slope of the line connecting two points
[tex]A=(x_1,y_1),\quad B=(x_2,y_2)[/tex]
is defined as
[tex]m = \dfrac{\Delta y}{\Delta x} = \dfrac{y_2-y_1}{x_2-x_1} = \dfrac{14-(-9)}{8-5} = \dfrac{23}{3}[/tex]
