ANSWER and EXPLANATION
We want to find the transformation that maps RSTU to R'S'T'U'.
First, there was a translation of RSTU.
We see that RSTU was moved 2 units to the left.
Then it was moved 2 units down, to touch the x axis.
Finally, there was a reflection across the y axis.
We can check this mathematically by picking a vertex of RSTU.
Let us pick S.
Translate it by moving it 2 units left and 2 units down:
S(4, 4) => S'(4 - 2, 4 - 2)
S'(2, 2)
Now, reflect across the y axis, it becomes:
S'(2, 2) => S'(-2 2)
We see that this matches the coordinate of S' in the image R'S'T'U'.
