Find the value of kkk for which the lines x+2y−3=0x + 2y - 3 = 0x+2y−3=0 and 2x+4y+k=02x + 4y + k = 02x+4y+k=0 are coincident.
k=−6k = -6k=−6
k=6k = 6k=6
k=3k = 3k=3
k=−3k = -3k=−3