Can anyone help me with this question? I'm working on some math homework and I can't figure this one out? Thanks.. :)
What are the coordinates of the pre-image of N' if it was reflected across the y-axis, and N' has coordinates (3, -1)?

Question

Can anyone help me with this question? I'm working on some math homework and I can't figure this one out? Thanks.. :) 
What are the coordinates of the pre-image of N' if it was reflected across the y-axis, and N' has coordinates (3, -1)?

raden · Answer

-x = 3
solve for x

and 

y = -1 (already solved :)