Question

show that (2,-1,3), (1,-1,0), (3,-1,6) are collinear​

Answer 1

Answer:

X

1

,Y

1

,Z

1

= 2,−1,3

X

2

,Y

2

,Z

2

= 4,3,1

X

3

,Y

3

,Z

3

= 3,1,2

X

2

−X

3

X

1

−X

2

=

Y

2

−Y

3

Y

1

−Y

2

=

Z

2

−Z

3

Z

1

−Z

2

1

−2

=

2

−4

=

−1

2

1

−2

=

1

−2

=

1

−2

Hence, the points are coplanar.