Question

quadrilateral efgh is reflected across the y - axis to produce quadrilateral efgh. write the rule for the reflection across the y - axis to produce quadrilateral efgh. (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: Write the rule

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

Answer:

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