Question

r.12 reflections and rotations: write the rule 2f8
pentagon fghij is reflected across the y - axis to produce pentagon fghij.
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:

$(x,y)\to(-x,y)$