Answer:
(-5, 4)
Step-by-step explanation:
(x, y)
Reflection of a Point in x-axis: (-x, y)
Reflection of a Point in y-axis: (x, -y)
Reflection of a Point in origin: (-x, -y)
We have the point X(5, 4).
Therefore
the new coordinates of the point X in reflection across y-axis is (-5, 4).
