Help me I losing it lol

Answer:
C( 3, 0) ; D( 7, 1) ; E(2, 4)
Step-by-step explanation:
If it is reflected over the y axis, then:
[tex]y = f( - x)[/tex]
Simply put, you will multiply all your x coordinates by -1 or the x-y coordinates on the left side of the y axis will move to the right side of the y axis.
[tex]x1 = - 3 \times - 1 = 3[/tex]
[tex]x2 = - 7 \times - 1 = 7[/tex]
[tex]x3 = - 2 \times - 1 = 2[/tex]
C( 3, 0) ; D( 7, 1) ; E(2, 4)