Graph of a system of inequalities forming a triangular solution region with vertices at (0,0), (8,0), and (0,4).
A graph showing a system of inequalities with a shaded triangular region. The inequalities are y ≤ -1/2x + 4, x ≥ 0, and y ≥ 0. The vertices of the triangle are at (0,0), (8,0), and (0,4).