SOLUTION
Given the question in the question tab, the following are the solution steps to answer the question.
STEP 1: Write the given transformation

STEP 2: Define transformation
Transformation involves moving an object from its original position to a new position. The object in the new position is called the image.
STEP 3: Describe the transformation
When we have a transformation where the x and y are swapped to form an image, this type of transformation is said to be "reflection about the line y =x".
Hence, the transformation that produces the image in the question is:
"Reflection about the line y = x"