Let u = (8, - 4) and v= ( -3,6) . Find the component form and magnitude (length) of the vector 2u - 2v. The component form is 2u - 2v=( (Simplify your answers.) The magnitude is |2u - 2v| = (Type an exact answer, using radicals as needed.) Time Remaining: 00:50:34 NextA line passes through the point (8,6,9), and is parallel to the vector 4i + 3j + 8k. Find the standard parametric equations for the line, written using the components of the given vector and the coordinates of the given point. Let z = 9 + 8t. x = ], y=, z= 0 (Type expressions using t as the variable.) Time Remaining: 00:55:12 NextFind the angle between the vectors u = 4i +j and v = - 4i + 6] - 5k. W The angle between the vectors is 6 z D radians. (Round to the nearest hundredth.) (9 Time Remaining: 00:52:02 u