+0  
 
0
124
1
avatar+42 

....... 

 Apr 30, 2021
 #1
avatar+121048 
+1

X =  (5, 4)

 

When  reflected across the  y  axis , the  x coordinate just changes  signs

 

So.....

 

X'  = ( -5, 4)

 

 cool cool cool

 Apr 30, 2021

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