Answer:
-1
Step-by-step explanation:
(x₁ , y₁) = (1 , 3)
(x₂ , y₂) = (-1 , 5)
[tex]Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]
[tex]=\frac{5 - 3}{-1-1}\\\\=\frac{2}{-2}\\\\= -1[/tex]
