Graph,

Consider the given points A(-3,1),B(9,7),C(3,2),D(-1,1)E(3,3),F(1,0).

Now, draw the graph.

Interpretation:

From the figure there are two triangles \(\displaystyle\triangle{A}{B}{C}{\quad\text{and}\quad}\triangle{E}{D}{F}\).

Now,

\(\displaystyle\frac{{{A}{B}}}{{{D}{E}}}=\frac{{{B}{C}}}{{{E}{F}}}=\frac{{{A}{C}}}{{{D}{F}}}=\frac{{3}}{{1}}\)

Thus, by SSS similarity theorem triangles are similar.