Question

r.12 reflections and rotations: write the rule 2f8
△qrs is reflected across the y - axis to produce △qrs.
write the rule for the reflection.
(x, y)→( , )

Explanation:

Step1: Recall reflection rule

When reflecting a point $(x,y)$ across the $y - axis$, the $y$-coordinate remains the same and the sign of the $x$-coordinate changes.

Step2: Write the rule

The rule for reflecting a point $(x,y)$ across the $y$-axis is $(x,y)\to(-x,y)$.

Answer:

$(-x,y)$