The shaded region shown on the grid is bounded by four straight lines - Edexcel - GCSE Maths - Question 16 - 2022 - Paper 2

The line at the bottom is horizontal, represented by the equation:

$y \geq 4$

This inequality indicates that the shaded region is above or on the line at y = 4.

The leftmost line is vertical, represented by the equation:

$x \geq 2$

This means the shaded region is to the right of or on the line at x = 2.

The rightmost line is vertical, represented by the equation:

$x \leq 4$

This shows that the shaded region is to the left of or on the line at x = 4.