To solve this worksheet students should have a good understanding of reflection and coordinate plane. If a point is reflecting over the x-axis then the reflection rule is (x,y)→(x,-y), and if a point is reflecting over the y-axis then the reflection rule is (x,y)→(-x,y).
For example, if a point (2,3) is reflecting over the x-axis then its image will be on the opposite side of the x-axis and equidistance from x-axis. Therefore, the coordinates of the image are (2,-3).