Triangle XYZ is shown on the coordinate plane below:

Triangle XYZ on the coordinate plane with ordered pairs at X 3, negative1, at Y 4, negative 4, at Z 1, negative 2

If triangle XYZ is reflected across the line y = 1 to create triangle X'Y'Z', what is the ordered pair of X'?

(3, 3)
(3, 1)
(-1, -1)
(-3, -1)

Question

Triangle XYZ is shown on the coordinate plane below: 

Triangle XYZ on the coordinate plane with ordered pairs at X 3, negative1, at Y 4, negative 4, at Z 1, negative 2 

If triangle XYZ is reflected across the line y = 1 to create triangle X'Y'Z', what is the ordered pair of X'?

 (3, 3)
 (3, 1)
 (-1, -1)
 (-3, -1)

anonymous · Answer

http://seminole.flvs.net/webdav/assessment_images/educator_geometry_v14/0602/0602_G8_Q2.gif

anonymous · Answer

The answer would be D, if you reflect across the y axis, you change the sign of your x value, and vice vera.