Answer:

M=0

Step-by-step explanation:

1: Write the slope formula

m = \frac{y2 - y1}{x2 - x1}

2: Substitute

\frac{y2 - y1}{x2 - x1}

(3,2),(-8,2)

m = \frac{0}{-8 -3}

3: Solve the equation

m = \frac{0}{-8 -3}

Apply zero property of multiplication.

Answer - m = 0