to write coordinates you need see x firts and y late and write
the A point is
[tex](2,5)[/tex]
because is 2 on x and 5 on y
The B point
[tex](7,5)[/tex]
The C point
[tex](7,2)[/tex]
The D point
[tex](2,2)[/tex]
to reflect across Y you need to change the sign of x or the first term on the coordinate
so
A'
[tex](-2,5)[/tex]
B'
[tex](-7,5)[/tex]
C'
[tex](-7,2)[/tex]
D'
[tex](-2,2)[/tex]
