1. Give parametric equations x(t), y(t), and bounds for t that produce a line segment from (2,-1) to (-2,4).
 
 
 

2. Give parametric equations x(t), y(t), and bounds for t that produce the lower half of a circle (centered at the origin) of radius 5 traversed counterclockwise.
 
 
 

3. Plot the vector field F(x,y) =2yi - xj for the points (0,0), (2,1), (0,2), (1,-1), and (-1,-2) indicated on the coordinate system below.