Slope can be calculated using the formula: m= [tex]\frac{y2 -y1}{x2-x1}[/tex]
y1/x1 represents the first number in the bracket
y2/x2 represents the second number in the bracket
Calculation
m = [tex]\frac{y2 -y1}{x2-x1}[/tex]
m = [tex]\frac{4 - (-2)}{(-9)-3}[/tex]
m= 6/-12
m= -0.5 or -1/2
Therefore, the answer is B.
