Question: Plotting with customised legend location

I have two equations 

(i) x=t^2;

(ii) y=t^3;

I want to plot these two equations into a single graph [i.e. combine these two graphs: graph of x versus t (solid line, bule color), and graph of y versus t (dash line, red color)].

How do I customise the location of the legend? I want the legend located inside the blank space of graph (say, at top-right corner ) with vertical alignment. Thank you.

That is something simililar to the following graph:

Please Wait...