Persamaan bayangan garis x+2y−1=0x+2y-1=0x+2y−1=0 oleh rotasi terhadap titik pusat O(0,0)O\left(0,0\right)O(0,0) sebesar 180°180\degree180° adalah ....
x+2y+1=0x+2y+1=0x+2y+1=0
x−2y−1=0x-2y-1=0x−2y−1=0
x−2y+1=0x-2y+1=0x−2y+1=0
2x+y+1=02x+y+1=02x+y+1=0
2x+y−1=02x+y-1=02x+y−1=0