Answer:
-3
Step-by-step explanation:
Easy way:
Between the two marked points, you can count that you need to go down 6 and over 2. That means the rise/run is -6/2, or -3.
Full way:
Starting Point: (-1,3)
Ending Point: (1,-3)
Slope is given by (y₂-y₁)/(x₂-x₁)
To calculate this, (-3-(3))/(1-(-1))
Clean up the double negatives to get (-3-3)/(1+1), AKA -6/2
-6/2 = -3.
