7. Find the area of the parallelogram with vertices at (1, 2), (4, 6), (9, 7) and (6,3). 8. Find a vectorvalued function whose graph traces out the line through the points (1, 2, 3) and (4, 5, 6) and the distance from this line to the origin. 9. Find a vector-valued function for the tangent line to the curve C that is the graph of v(t) = (tln (t), 2 t2, cos (7%)) at the point (0, 1,1)