Answer:
-6
Step-by-step explanation:
To find the slope, plug any two of your points into the slope formula.
I'll use your first two; (-2, 8) and (-1, 2).
[tex]\frac{y2-y1}{x2-x1}[/tex]
Your y1 term is 8, your y2 term is 2.
Your x1 term is -2, your x2 term is -1.
[tex]\frac{2-8}{-1-(-2)} \\\\\frac{-6}{-1+2} \\\\\frac{-6}{1} \\\\-6[/tex]
Your slope is -6.
