Use the image to answer the question.

To determine a line of reflection that will map trapezoid PQRS onto itself, we typically look for lines that are either the midpoints of parallel sides or lines that bisect angles in a symmetrical way.

For a trapezoid, one common line of reflection is the line that passes through the midpoints of the two non-parallel sides. If PQRS is symmetrical around a horizontal or vertical line, then that line can also be a line of reflection.

If trapezoid PQRS is symmetric about the horizontal line between the top and bottom bases, then the line of reflection could be the line \(y = k\), where \(k\) is the y-coordinate of this horizontal line.

Please analyze the trapezoid PQRS specifications to find exact coordinates and identify the appropriate line of symmetry.

If you cannot provide the coordinates or describe the symmetry in the trapezoid, I suggest common lines such as \(y = 0\) (the x-axis), or \(y = c\), where \(c\) is the average of the y-coordinates of the two bases.

Without the visual reference, a typical answer might be:

**Line of reflection: \(y = c\)** (where \(c\) is the y-coordinate of the mid-line between the bases of trapezoid PQRS if it appears symmetrical).