Polygon WXYZ is shown on the coordinate grid. If polygon WXYZ was reflected across the y-axis to create polygon W’X’Y’Z’, which rule describes this transformation? (See reference image.)

The rule that describes the reflection of polygon WXYZ across the y-axis is (x, y) → (-x, y).

the answer is (x, y) → (-x, y)

Yes, that is correct. The transformation rule (x, y) → (-x, y) reflects a point across the y-axis. Thank you for confirming!