Answer:
The answer to your question is slope = 0
Explanation:
Data
Point 1 = (-8, -4)
Point 2 = (4, -4)
Process
1.- Write the formula to calculate the slope
slope = m = (y2 - y1) / (x2 - x1)
2.- Identify x1, y1, x2 and y2
x1 = -8 y1 = -4 x2 = 4 y2 = -4
3.- Substitution
m = (-4 + 4) / (4 + 8)
4.- Simplification
m = 0 / 12
5.- Result
m = 0