The points with coordinates `(2a,3a), (3b,2b)` and `(c,c)` are collinear

If the points with the coordinates (a, ma), {b,(m+1)b}, {c,(m+2)c} are collinear, then which one of the following is correct ?

If a, b, c are distinct real numbers, show that the points (a, a^2), (b, b^2) and (c, c^2) are not collinear.

Prove that the point A(1,2,3), B(-2,3,5) and C(7,0,-1) are collinear.

Show that the points A(2,3,-4) , B(1,-2,3) and C(3,8,-11) are collinear .

Prove that the points A(2,0,-3), B (1,-2,-5) and C(3,2,-1) are collinear.

Prove that the points A(2,0,-3), B (1,-2,-5) and C(3,2,-1) are collinear.

Show that the points A (-2,3,5), B (1,2,3) and C (7,0,-1) are collinear.

Show that the points A(1,3,2),B(-2,0,1) and C(4,6,3) are collinear.

Show that the points A(1,3,2),B(-2,0,1) and C(4,6,3) are collinear.

Show that the points A(1,2,7), B(2,6,3) and C(3,10,-1) are collinear.