Question

Find A and B such that the lines r1 = <1,2,1> + t<1,-1,1> and r2 = <3,-1,1> + t intersect.

Answer 1

2 paremetric equations of line intersection point
so x,y,z point of these equations must be equal

Answer 2

Where is the 'b"?

Answer 3

This problem feels weird.

Answer 4

Find A and B such that the lines r1 = <1,2,1> + t<1,-1,1> and r2 = <3,-1,1> + t<a,b,-2> intersect.