Exercise 1.  Find a parametrization of the line that  

1 (a).  joins the origin    to the point  .  

Solution 1 (a).

See text and/or instructor's solution manual.

We are done.   

Aside.  We can let Mathematica double check our work.

        The line  ,   and  

        the initial point is    and the terminal point is  .  

This solution is complements of the authors.

(c) 2008 John H. Mathews, Russell W. Howell