@xGuardians

Triangle ABC is to be reflected across line m to create triangle A'B'C'.

Which best describes the location of B'?

A.
7 units to the right of point B.

B.
7 units to the left of point B.

C.
7 units to the right of line m.

D.
7 units to the left of line m.

http://static.k12.com/calms_media/media/1419500_1420000/1419542/2/78b721a96dc125ca5d2309f35107c9f2f1c5f5a0/FGA_130921_1614023.jpg

Question

@xGuardians 

Triangle ABC is to be reflected across line m to create triangle A'B'C'. 

Which best describes the location of B'?
  

 
 A.
7 units to the right of point B.
 
 B.
7 units to the left of point B.
 
 C.
7 units to the right of line m.
 
 D.
7 units to the left of line m.

http://static.k12.com/calms_media/media/1419500_1420000/1419542/2/78b721a96dc125ca5d2309f35107c9f2f1c5f5a0/FGA_130921_1614023.jpg

anonymous · Answer

@xGuardians

xguardians · Answer

Okay, count how far away B is from the line, tell me what you get.

anonymous · Answer

7

xguardians · Answer

Okay good, so now do you know what reflecting a shape does? (Its okay if you don't)

anonymous · Answer

no i don't :(

xguardians · Answer

|dw:1402433858769:dw|
It reflects the point across, leaving them on the same x-coordinate except negative. Therefore B' would be 7 point to the left of line M.

B is answer :)