1. Which of the following are true about linear transformations?
   a) points go in as column vectors
   b) we must use homogeneous coordinates (higher dimensional coordinate=1) if we want to use translations
   c) they compose from right to left, like functions
   d) more than one of a, b and c, but not all of them
   e) all of a, b and c
   
   
   
   
2. To keep a car on a curved race track, we can perform the appropriate matrix operations in the following order:
   a) Rot.Trans_on_curve.car
   b) Trans_on_curve.Rot.car
   c) Either a) or b) works
   d) Neither a) nor b) works