Answer with sometimes, always, or never true. give an example/counterexample. when a point is reflected across the y-axis, the new point has a negative x-coordinate.

Sometimes
If the original x coordinate is negative, it will become positive. For example, (-5, 5) would become (5,5), which is a positive x. The sign of the x changes when reflected over the y axis.

The answer to your question is b’(16,14)