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Make an x, y table with the x values representing the figure number and the y values representing the number of tiles.

Fill in values for x and y. What is the growth?

Work backward. What is the starting point?

Write an equation y = mx + b using the growth and starting point.

y = 3x

Does this rule work for your table?

Once you find a rule for the pattern use the eTool below to complete the figures.
Click the link at right for the full version of the eTool: AC 6-85 HW eTool.