help please, i have absolutely no idea how to do this :(

Answer:
[tex]m = \frac{1}{2}[/tex]
Step-by-step explanation:
Two points are ( 8, 0 ) and (0 , - 4)
[tex]slope \ , \ m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{-4 -0}{0-8}=\frac{-4}{-8} = \frac{1}{2}[/tex]