1. The problem statement, all variables and given/known data 1) Find the equation of the line L which passes through the point P0(1, 0, 2) and intersects the line L1 :(x − 1)/2=(y + 1)/3, z = 1 orthogonally. 3. The attempt at a solution ı thought the line L1 as a parametrisation like x=2t+1;y=3t-1;z=1; then I took a vector parallel to L as ai+bj+ck. Then since the parallel vector of L1 (which is 2i+3j) orthogonal to ai+bj+ck then the dot product of them will 0. This lead 2a+3b=0; Therefore, I can think L as ; x=1+3bt/2 and y=bt. However, my question is how about c? how can ı relate it to a and b? Or is my approach to question is wrong?