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lord [1]
3 years ago
7

∆ABC is reflected about the line y = -x to give ∆A'B'C' with vertices

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
4 0
Since A‘(-1,1) is on the line y=-x, reflecting it about the line doesn't change its coordinate, so A's coordinate is (-1,1). Reflecting B'(-2,1) about y=-x switches both the sign and the number of x and y, so B=(-1,2), and C'(-1,0) becomes C(0,1). Drawing out the graph with the points and the line helps.
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