Let L1 be the line passing through the points Q1=(4, 1, 2) and Q2=(0, −1, 4) and let L2 be the line passing through the point P1=(20, 8, −7) with direction vector →d=[−3, −1, 2]T. Determine whether L1 and L2 intersect. If so, find the point of intersection Q.

Answer 1

umhhh, why not look back at your earlier posts before reposting the same question ?

http://www.jiskha.com/display.cgi?id=1445204064