On a coordinate plane, a triangle has points A prime (negative 2, 10), B prime (negative 6, 4), and (negative 10, 8). What is th
e pre-image of vertex A' if the image shown on the graph was created by a reflection across the line y = x? (10, –2) (–10, 2) (–2, –10) (2, 10)
1 answer:
Answer:
(A)(10, –2)
Step-by-step explanation:
The image of the given triangle has points :

When points are reflected across the line y = x, the x-coordinate and y-coordinate change places.
Therefore, the pre-image of the triangle has points:

Therefore, the pre-image of vertex A' is (10,-2).
The correct option is A.
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