Question

Rectangle DEFG has vertices D (2, 4), E (4, 7), F (10, 3), and G (8, 0). Without graphing, determine the coordinates of D′, E′, F′, and G′ after rectangle DEFG has undergone the described transformation.

Reflect about the y-axis

Answer 1

I believe the X numbers will all be negative since that it is reflecting across the Y (not affected). Only the X is affected. D'(-2,4) E'(-4,7) F'(-10,3) G'(-8,0). And if it is reflected over the X axis, the Ys would be different. I hope this made sense and hope it helped! :)