Question

△klm is reflected across the x - axis to produce △klm. write the rule for the reflection.

Explanation:

Step1: Recall reflection rule

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

Step2: Write the general rule

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

Answer:

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