Answer: The slope is 6.
Step-by-step explanation:
The slope is the difference between the y coordinates divided by the difference between the x coordinates.
y coordinates: -6 and 6.
x coordinates: 1 and 3.
Difference in y: -6 - 6 = -12
Difference in x: 1 -3 = -2
Slope: -12/-2 = 6
