Draw Figure 0 and Figure 4 for the pattern below on graph paper.  

1. Represent the number of tiles in each figure with:

   • An $x→y$ table.

   • An algebraic rule.

   • A graph.

   Hint (a):

   Try and find a connection between the figure number and the number of tiles.

2. Without drawing Figure 5, predict where its point would lie on the graph. Justify your prediction.

   Hint (b):

   Use the information found in part (a), and find what $y$ is when $x=5$ on the graph.