1. Give parametric equations x(t), y(t), and bounds for
t that produce a line segment from (2,5) to (-1,3).
2. Give parametric equations x(t), y(t), and bounds for
t that produce the left half of a circle (centered at the origin)
of radius 3 traversed counterclockwise.
3. Plot the vector field F(x,y) =yi - 1j for the points (0,0), (2,1), (0,2), (1,-1), and (-1,-2) indicated on the coordinate system below.