Find the non-parametric equation of a line passing through `(1, 2, 3)` and perpendicular to the vectors `(5hati - 3hatj + 4hatk) and (-7hati +4hatj +9hatk).` Or Find the equation of a straight line passing through point `(1, 2, 3)` and perpendicular to the vectors `(5, -3,4) and (-7,4,9).`