Reflection over y axis

Question

Amy places a dot on a coordinate plane at (-3, -6). She wants to place another dot across the y-axis, and it must be 8 points away. Where will Amy place the other dot?

Answer 1

(5, -6) would be the new point.

Answer 2

Across the y axis will have the same y coordinate, from -3, move toward the y axis 8 points away. 3 points would put you on the y axis, so you need to go 5 more to total 8. The new point would be (5,-6)