Question

1. (se) what are the coordinates of j and k after jk is reflected across the y - axis? a. j(-3, 1),k(-1, 4) b. j(-3, 4),k(-1,-1) c. j(3,-1), k(1,-4) d. j(3, 1),k(-1, 4)

Explanation:

Step1: Recall reflection rule

When a point $(x,y)$ is reflected across the $y -$axis, the rule is $(x,y)\to(-x,y)$.

Step2: Assume coordinates of $J$ and $K$

Although the original coordinates of $J$ and $K$ are not given in the text part, we just need to apply the reflection rule. For any point $(x,y)$ of $J$ and $K$, after reflection across the $y -$axis, the $x -$coordinate changes sign and the $y -$coordinate remains the same.

Answer:

A. $J'(-3,1),K'(-1,4)$