math
posted by rob .
Given ABCD with A = (1,1),B = (4, 2), C = (4, 5), and D = (1, 4),what are the coordinates for Point D' if the yaxis is the reflecting line?

reflect through yaxis takes (x,y) > (x,y)
So, D(1,4) > D'(1,4)
Don't know why all the nonsense about ABC unless there are other problems relating to the figure.