Question

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)​

Answer 1

D

Explanation:

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

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

So, the answer is
`\boxed{D}` and we're done!