mithydizon1553
27.09.2020 •
Mathematics
Sometimes two transformations, one performed after the other, have a nice description as a single transformation. For example, instead of translating 2 units up followed by translating 3 units up, we could simply translate 5 units up. Instead of rotating 20 degrees counterclockwise around the origin followed by rotating 80 degrees clockwise around the origin, we could simply rotate 60 degrees clockwise around the origin. Can you find a simple description of reflecting across the x-axis followed by reflecting across the y-axis?
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Ответ:
A: -8x - y = -43
B: 8x - 5y = -71
A+B -> -6y = -114
-> y = 19