Answer:
(x, y) → (x+3, y-3)
Explanation:
From the graph attached,
Let a point on preimage (in blue) is at A having coordinates (1, 2).
Point A has been translated to A'(in red) which has the coordinates (4, -1).
As we can see every side of the polygon are same in length.That means no change in the size of polygon.
Translation rule that defines the image A' from A is,
A(1, 2) → A'(4, -1)
A(x, y) → A'(x+3, y-3)