show that points A= (10,12,13), B=(13,14,14), and C=(18,18,16) are not collinear
vector BA = (3,2,1)
vector CB = (5,4,2)
since CB is not a scalar multiple of BA, they are not collinear
vector CB = (5,4,2)
since CB is not a scalar multiple of BA, they are not collinear