Which pair of transformations is equivalent to the transformation described by (x, y) - (x, -y +1)? А
a reflection across the x-axis followed by a translation of 1 unit up
® a translation of 1 unit up followed by a reflection across the x-axis
© a reflection across the Y-axis followed by a translation of 1 unit up
a translation of 1 unit up followed by a reflection across the Y-axis