4x + 3y ≤ 60 …………………………….. (1)
y ≥ 2x ………………………………………… (2)
x ≥ 3 …………………………………………. (3)
The graph of the lines, 4x + 3y = 60, y = 2x, and x = 3, are drawn in the figure below. Inequality (1) represents the region below the line, 4x + 3y = 60 (including the line 4x + 3y = 60). Inequality (2) represents the region above the line, y = 2x (including the line y = 2x). Inequality (3) represents the region on the right hand side of the line, x = 3 (including the line x = 3).
Hence, the solution of the given system of linear inequalities is represented by the common shaded region including the points on the respective lines as follows.
