To reflect a point across the y-axis, you need to change the sign of the x-coordinate while keeping the y-coordinate the same.
Given the point \((-4, -5)\):
- The x-coordinate is \(-4\). When we reflect this across the y-axis, it becomes \(4\).
- The y-coordinate remains \(-5\).
Therefore, the coordinates of the resulting point after reflection across the y-axis are \((4, -5)\).