J.4 Suppose you are given a line 10'} : p + :3. {a} Suppose the scalar to and a point r on 1 are given. Find a new parametrization l ' of 1 such that the (new) parametrization goes through I' at time In, i.e., l '(fg) : r. (13} Suppose scalars In, I], with It} i I. are given, and suppose two points 1' at 5, both on I, are given. Find a new parametrization 1" of 1 such that the (new) parametrization goes through r at time In, and goes through 5 at time I}, i.e., 1'00) : r, and 111]) : s