take two points : (-4, 3), (3, 1)
[tex]\sf slope: \sf \dfrac{y_2-y_1}{x_2-x_1}[/tex] where (x1, y1), (x2, y2)
Insert the following values
[tex]\hookrightarrow \sf \dfrac{1-3}{3-(-4)}[/tex]
[tex]\hookrightarrow \sf \dfrac{-2}{3+4}[/tex]
[tex]\hookrightarrow \sf -\dfrac{2}{7}[/tex]
