The graph of y ≤ 1 − 3x is graph B.
Which is the graph of the inequality?
We have the inequality:
y ≤ 1 − 3x
Because of the symbol used, we know that the line must be solid, this is because the points on the line are solutions.
Also, y is smaller than the line, so we need to shade the region below the line.
With that in mind, we can see that the correct option is B.