Given data:
The first point given is (-3,4).
The second point given is (2,-1).
The slope of the line passing through the given points is,
[tex]\begin{gathered} m=\frac{-1-4}{2-(-3)} \\ =\frac{-5}{5} \\ =-1 \end{gathered}[/tex]
Thus, the slope of the line is -1.
