Question

ryan reflects rectangle lmno across the y - axis. which best shows the rule for the reflection? (x,y)→(x,y) (x,y)→(−x,−y) (x,y)→(−x,y) (x,y)→(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 $x$-coordinate changes its sign.

Step2: Identify the rule

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

Answer:

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