Question

Given triangle JKL.

Write the coordinates of vertex J and its reflection J' across the y-axis.

Answer 1

(5, -2) = J'

(-5, -2) = J

Explanation:

Answer 2

The coordinates of J are (-5, -2).

When reflected across the y-axis, the y-coordinate remains unchanged. The x-coordinate changes to 5.
Therefore the reflected coordinates of J are (5, -2).
The reflected image is shown in red color in the picture below.

Answer:
After reflection across the y-axis, J' has coordinates (5, -2).