Respuesta :

gmany

[tex]\text{The formula of a slope:}\\\\m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\text{We have the points}\ (-3,\ 4)\ \text{and}\ (2,\ -1).\ \text{Substitute}\\\\m=\dfrac{-1-4}{2-(-3)}=\dfrac{-5}{5}=-1\to\boxed{D.}[/tex]