(551,#5)
Sketch the curve represented by the parametric equations x = sqrt(t), y = 1 -t.
.
Then eliminate the parameter to find the cartesian equation of the curve.
Solution: The parametric plot for t = 0..4
is a simple arc:
As for the cartesian equation
Thus the parametric plot of 
,
lies on the parabola
Maple code
by:sh