Equation of a straight line in space
Three-dimensional geometry and vector algebra · Mathematics
Study notes
Q: Find the equation of the line through (1,2,3) and (4,6,3). Write vector and Cartesian forms. Direction d = (3,4,0). Vector: r = (1,2,3) + t(3,4,0). Cartesian: (x−1)/3 = (y−2)/4, z = 3. (c=0: handle separately!)