[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Let's solve ~
[tex]\qquad \sf \dashrightarrow \: slope = \cfrac{rise }{run} [/tex]
[tex]\qquad \sf \dashrightarrow \: slope = \cfrac{y2 - y1 }{x2 - x1} [/tex]
[tex]\qquad \sf \dashrightarrow \: slope = \cfrac{2 - 4}{2 - ( - 1)} [/tex]
[tex]\qquad \sf \dashrightarrow \: slope = \cfrac{ - 2}{2 + 1} [/tex]
[tex]\qquad \sf \dashrightarrow \: slope(m) = - \cfrac{2}{3} [/tex]
