Question

reflect (7, 9) across the x-axis.
then reflect the result across the y-axis.
what are the coordinates of the final point?
(□,□)

Explanation:

Step1: Reflect over x-axis

For point $(x,y)$, reflection over x-axis is $(x,-y)$. So $(7,9) \to (7,-9)$.

Step2: Reflect over y-axis

For point $(x,y)$, reflection over y-axis is $(-x,y)$. So $(7,-9) \to (-7,-9)$.

Answer:

$(-7,-9)$