1. The problem statement, all variables and given/known data Find the line integral of f(x,y,z) = x+y+z over the straight-line segment from (1,2,3) to (0,-1,1). 2. Relevant equations ∫ f(x,y,z)ds = ∫ f(g(t), h(t), k(t)) |v(t)| dt 3. The attempt at a solution I arrived at the correct solution, but I'd like some clarity on the result. The final answer to this is 3√(14) or -3√(14) depending on which point you choose as your parametric equation. x = -t y = -3t-1 z = -2t+1 From using the point (0,-1,1) and (-1,-3,-2) as my direction vector. What I would like to understand is the meaning of the positive and negative result. Does it matter? It just seems to me that my result should have been positive since I am moving from a lower position to a higher position, no? BTW, QUICK SHOUTOUT TO PF --- THE NEW SITE IS AMAZING! GREAT JOB ON THE NEW LAYOUT.