Answer :
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!