graph in the interval [0,5] indentify the end values and convert form parametric to rectangular form?

Question

x(t)=-t/2 y(t)=t^2

Answer 1

x=-t/2
2x=-t
-2x=t
y=t^2
y=(-2x)^2
y=4x^2
The graph is a parabola with vertex at (0,0), and in the x-interval [0,5], the end falls at (5, 100).

Answer 2

a million) x/2 = cos2t and y/3 = sin2t 2) sq. each and all the words x^2/4 = (cos2t)^2 and y^2 /9 = (sin2t)^2 3) upload the equations x^2/4 + y^2/9 = (cos2t)^2 + (sin2t)^2 4) As (cosa)^2 + (sina)^2 = a million you get x^2/4 + y^2/9 = a million