Answer: B. -1/3
Step-by-step explanation:
The graph gives the two points of (0,4) and (6,2) and we can use the slope formula to find the slope using the points.
[tex]m = \frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
[tex]y_{2} = 2 - y_{1} = 4\\x_{2} = 6 - x_{1} = 0[/tex]
[tex]m = \frac{2-4 }{6 -0}\\m = -2/6 \\m = -1/3[/tex]