Answer:
The line segment is reflected over the line y = –x.
Step-by-step explanation:
We have a line segment with endpoints at (–1, 4) and (4, 1).
To determine: What reflection will create an image with endpoints at (–4, 1) and (–1, –4).
Solution: Starting with endpoints at (–1, 4) and (4, 1).
After reflection, the new endpoints will be (–4, 1) and (–1, –4).
Reflection: (–1, 4) →→ (–4, 1)
(4, 1)→→→ (–1, –4).
It can be seen that the x-coordinate changes to –y and the y-coordinate changes to –x.
(x,y) →→ (–y, -x)
This showcases the rule of reflection across the line y = –x.
Therefore, it is a reflection of the line segment across the line y = –x.