Calculate the linear combination. 3(4i 3j) + 6(i + 3j) = (x, y) (Use symbolic notation and fractions where needed.) X = y = Which of the following is a parametrization of the line through P = (5, 10, 6) perpendicular to the xz-plane? P y FIGURE The parametrization of the line is r(t) = (5, 10, 6) + t(0,0, 1) O r(t) = (5, 10, 6) + t(1,0, 1) O r(t) = (5, 10, 6) + t(0, 1,0) O r(t) = (5, 10, 6) + t(1, 1,0)