?Plot

Plot[Exp[-1/x^2], {x, -4, 4}]

ParametricPlot[{Exp[-1/t^2], Sin[t]}, {t, -4,4}, PlotRange -> {{-4,4}, {-4,4}}]

ParametricPlot[{Exp[-1/t^2], Sin[t]}, {t, -4,4}, PlotRange -> {{0,2}, {-2,2}}]

ParametricPlot[{t^2,t^3}, {t, -2, 2}, PlotRange -> {{0,4}, {-8,8}}]

Manipulate[ParametricPlot[{Cos[t], Sin[a*t]}, {t, -4,4}, PlotRange -> {{-2,2}, {-2,2}}], {a, -2, 2}]

Manipulate[ParametricPlot[{Cos[b*t], Sin[a*t]}, {t, -4,4}, PlotRange -> {{-2,2}, {-2,2}}], {a, -2, 2}, {b, -2, 2}]

Manipulate[ParametricPlot[{Cos[t], Sin[t]}, {t, 0,k}, PlotRange -> {{-4,4}, {-4,4}}], {k, 0.1, 2Pi}]

Manipulate[ParametricPlot[{Cos[t], Sin[t]}, {t, 0,2Pi}, PlotRange -> {{-4,4}, {-4,4}}, Epilog -> {Red,PointSize[Large],Point[{Cos[k], Sin[k]}]}], {k, 0.1, 2Pi}]

ParametricPlot[{Cos[t], Sin[t]}, {t, 0,2Pi}, PlotRange -> {{-4,4}, {-4,4}}, Epilog -> {Line[{{1,0}, (*dgshsdjhdsjk*) {Sqrt[2],Sqrt[2]},{0,-2}}]}]

?ParametricPlot

ellisse[x0_, y0_][a_,b_][t_] :={x0+a*Cos[t], y0+b*Sin[t]}

ellisse[1,2][3,4][t]

ParametricPlot[ellisse[1,2][3,4][t], {t,0,2Pi}]

Manipulate[ParametricPlot[ellisse[x0,y0][a,b][t], {t,0,2Pi}, PlotRange -> {{-5,5},{-5,5}}], {x0, -2,2}, {y0, -2,2}, {{a,1}, .2, 2}, {b, .2,2}]

ParametricPlot3D[{Cos[3t]Cos[t], Cos[3t]Sin[t], Sin[3t]}, {t, 0, 2Pi}]

elica[a_, b_][t_] := {a*Cos[t], a*Sin[t], b*t}

ParametricPlot3D[elica[1,.5][t], {t, -2Pi, 2Pi}, PlotRange -> {{-2,2},{-2,2},{0,4}}]

ParametricPlot3D[elica[1,.5][t], {t, -16Pi, 16Pi}, PlotRange -> {{-8,8},{-8,8},{0,24}}, Boxed -> False, Axes -> False]

ParametricPlot3D[elica[1,.1][t], {t, -16Pi, 16Pi}, PlotRange -> {{-8,8},{-8,8},{0,24}}, Boxed -> False, Axes -> False]

Options[ParametricPlot3D]