Answer
$y=x^{2}$
Work Step by Step
Express $t$ in terms of one variable and substitute it into the other equation.
$x=3t\displaystyle \Rightarrow\quad t=\frac{x}{3}$
$y=9t^{2} \displaystyle \Rightarrow\quad y=9(\frac{x}{3})^{2}=x^{2}\qquad $\fbox{$y=x^{2}$}
To graph, create a table using several values for t, and then calculate $(x(t), y(t)),$ plotting the points as you go. Join with a smooth curve, noting the direction in which t increases.
