2010008709

SubArea: 
Space geometry
Level: 
C
Project ID: 
2010008709
Source Problem: 
2010008710
Accepted: 
0
Clonable: 
1
Easy: 
0
Reflect the point P=[4;−8;7] across the plane σ:3x−2y+4z+2=0. Hint: The line PP′ is perpendicular to the plane σ (see the picture).
P′=[−8;0;−9]
P′=[−2;−4;−1]
P′=[10;−12;15]
P′=[16;−16;23]