Long description: fig4
Alt text: A graph showing a shaded rectangular region bounded by the lines y = 1, y = -1, x = 0, and x = 5.
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- The image displays a Cartesian coordinate system with the horizontal axis labeled \(x\) and the vertical axis labeled \(y\).
- A shaded rectangular area is drawn on the graph, indicating the region of integration or the area being described.
- The top boundary of the shaded region is the horizontal line \(y = 1\).
- The bottom boundary of the shaded region is the horizontal line \(y = -1\).
- The left boundary of the shaded region appears to coincide with the \(y\)-axis, representing the line \(x = 0\).
- The right boundary of the shaded region is the vertical line \(x = 5\).
- The overall shaded region is a rectangle with a width of 5 units and a height of 2 units.