Keemdadream13
23.09.2020 •
Mathematics
R’(-1, 9) is the image of R after a reflection in the x-axis. What are the coordinates of R?
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Ответ:
Step-by-step explanation:
When we reflect over x-axis then the x-coordinate doesn't change and the y-coordinate changes its sign
in means if R = (x, y) then R' = (x, -y)
so we have:
x = -1 and -y = 9
y = -9
which gives R = (-1, -9)
Ответ: