Can you please explain the questions in steps? thank you

Question 1

Do the following lines in [R3 intersect? If so, where? Line 1: r : (1, 7, 2) + t(5,4, 3) Line 2 a: : 2 s y : 16 + 2.9 Let A,B be 5x5 matrices such that: 2, if ij = 4 ai,j 1, otherwise bij = 3 -aji Solve the matrix equation ABx=(-2,0,5,1,3) for x. Which of the following is x? O The answer exists but it is not available in any of the given options O (-2,0,5,1,3) The answer does not exist (10,11,9,11,9) O (-1, 1, 3, 2,3)Suppose A,B,C, and D are all 2x2 invertible matrices. Which one is the correct expression for B if (A+BT)C -1=D? O (DC-A) T None of the above DC+A O (CD-A) T O DC-A O CD-A O (DC+A) T