Final answer:
△ABC is congruent to △A'B'C' because you can map △ABC to △A'B'C' using a reflection across the x-axis followed by a translation 3 units down, which is a sequence of rigid motions.
Step-by-step explanation:
The statement that correctly describes the relationship between △ABC and △A'B'C' is:
△ABC is congruent to △A'B'C' because you can map △ABC to △A'B'C' using a reflection across the x-axis followed by a translation 3 units down, which is a sequence of rigid motions.
To demonstrate congruence, we can perform a reflection across the x-axis to change the y-coordinates of the vertices. This transformation will map A(-1, 1) to A'(-1, -4), B(-2, 3) to B'(-2, -6), and C(-5, 1) to C'(-5, -4). Then, we can perform a translation 3 units down to map A' to A'(-1, -4+3), B' to B'(-2, -6+3), and C' to C'(-5, -4+3). The resulting coordinates of the vertices of △A'B'C' will be A'(-1, -1), B'(-2, -3), and C'(-5, -1), which are equal to the original coordinates of △ABC.