A(-2,-4), B(-4,-2), C(-6,-4)
Translating by (2,3) adds 2 to the x and 3 to the y so gives
A'(0,-1), B'(-2,1), C'(-4, -1)
Reflecting in x=0 (the y axis) keeps the ys the same but negates the xs
A''(0,-1), B''(2,1), C''(4,-1)
I'll leave the drawing to you.