Suppose a line segment has endpoints A(4,-5) and R(-3,9). The line is reflected over the x- axis. What are the coordinates of R'? A (-9,3) B (3,-9) с (9,-3) D (-3,-9)

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05-10-2021
Mathematics

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Suppose a line segment has endpoints A(4,-5) and R(-3,9). The line is reflected over the x- axis. What are the coordinates of R'? A (-9,3) B (3,-9) с (9,-3) D (-3,-9)

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Danielgeyfmanidn Danielgeyfmanidn · Answer 1 · 2021-10-05T21:41:07-04:00

Danielgeyfmanidn Danielgeyfmanidn

05-10-2021

Answer:

D

Step-by-step explanation:

We really don't care about [tex]A'[/tex] because it's not something the question wants, so let's just focus on [tex]R[/tex].

[tex]R[/tex] reflected across the [tex]x[/tex]-axis is the same as flipping the sign of the [tex]y[/tex] coordinate. So, [tex]R'=(-3, -(9))=(-3, -9)[/tex].

So, the answer is [tex]\boxed{D}[/tex] and we're done!

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