Answer:
(0,1) and (-2,4)
Explanation:
Reflection over y axis means that the x axis coordinate will be negative as it will now have shifted to the other side of the axis. Since (0,1) is on the y axis it will remain in it's position not changing. (2,4) will change to (-2,4) as it is now at the other side (negative-x side) of the y axis. I hope I helped