Question

I need help on both please

Answer 1

#1
The distance would be three units away from the y axis. When the point is reflected across the y axis the x value changes to a negative but the distance is still positive.
#2
If a point lies on the y axis it cannot be reflected across that axis. It would be the exact same point.

Answer 2

1 is 3,-5 because the x would just be the opposite