Triangle PQR was transformed to create the congruent triangle STU. Which describes how triangle PQR could have been transformed? reflected across the y-axis and dilated by a scale factor of 1/2 translated 2 units down and dilated by a scale factor of 3/2 dilated by a scale factor of 2 and translated 3 units to the right rotated 90 ° about the origin and reflected across the x-axis