the area shaded with vertical lines is the solution set of the inequalities;
The correct answer is: C
Explanation
Vertical Line x = 3:
This line indicates a constraint on x, specifically that
x ≤ 3.(behind is shaded)
The line y + 2x = -3 or y = - 2x - 3
This line has a negative slope of -2 and intersects the y-axis at -3. The region below this line corresponds to
y ≤ − 2x − 3.
Line y = x:
.This line has a slope of 1 and passes through the origin. The region below this line corresponds to y ≤ x
The lines are all thick = strict inequalities.