Answer:
4)A reflection over the y-axis.
Explanation:
Given : figure ABCDEFGH results in figure A'B'C'D'E'F'G'.
To find : Which transformation used in figures.
Solution : We have given that figure ABCDEFGH and figure A'B'C'D'E'F'G'.
By the reflection rule over y axis : (x ,y ) →→ ( -x ,y ).
We can see from diagram coordinates of A ( 2 ,-2 ) reflect in to A'( -2, -2),
B ( 4 ,-2) reflect in to B'( -4, -2) and so on,
Therefore, 4)A reflection over the y-axis.