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

Answer:

D

Step-by-step 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!