Answer:
B. y <= 1/3 x - 4
Explanation:
The line has y-intercept -4.
The slope is
m = rise/run = 1/3
The equation of the solid line is
y = 1/3 x - 4
Since the line is solid, we need >= or <=.
Since the shading is below the line, we use <=.
Answer: y <= 1/3 x - 4