Answer :
Answer:
Reflection about y axis
Step-by-step explanation:
A reflection about the y axis will change the sign of the x coordinates
Answer:
Horizontal translation or a reflection around a vertical axis
Step-by-step explanation:
If the change in the x-coordinate has been the addition or subtraction of a constant number (same number for all vertices of the quadrilateral), the transformation was a horizontal translation.
If the change in x coordinate was such of from x to its opposite, then the transformation was that of a reflection around the y axis.