Answer:
Option D
Step-by-step explanation:
SO we have to solve to know;
a. The formula is; [tex]\frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]
Slope = [tex]\frac{2-5}{-9-(-9)}[/tex] = [tex]\frac{-3}{0}[/tex] = -3
So A is not the answer!
b. The formula is; [tex]\frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]
Slope = [tex]\frac{1-(-4)}{-6-6}[/tex] = [tex]\frac{5}{-12}[/tex]
So B is not the answer!
c. The formula is; [tex]\frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]
Slope = [tex]\frac{-5-5}{4-(-4)}[/tex] = [tex]\frac{-10}{8}[/tex] = [tex]\frac{-5}{4}[/tex]
So C is not the answer!
d. The formula is; [tex]\frac{y_{2} -y_{1} }{x_{2}-x_{1} }[/tex]
Slope = [tex]\frac{1-1}{-8-3}[/tex] = [tex]\frac{0}{-11}[/tex] = 0
So D is the correct answer!!!
