Question

Are the coordinates (-3,5), and (3,5) reflections across the x-axis or y-axis

Answer 1

Consider the following graph:

So, we can conclude that the coordinates (-3,5), and (3,5) are reflections across the y-axis.

Consider now the points (-7,-4) and (-7,4), then, since the coordinate that changed sign is on the x -axis, we can conclude that it is a reflection with respect to the x -axis.