17. Which of the following points lies on the line R=(0,3,1)+t(2,1,1). A(4,5,-1) B(2,4,0) C(3,4,-1) D(8,7,-3) Mark Phlueii 18. Given the following two lines: L1: (x+1)/4=(y-2)/3=(z1)/2 L2: (x-4)/2=y/ l=(z+1)/1 Do they intersect? If they do, where? Mark Value:8