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A tile pattern has tiles in Figure and adds tiles in each new figure. Write the equation of the line that represents the growth of this pattern.  

Illustrate the problem.

Use the equation of a line to substitute in known information.

the rate of growth between each figure
the starting number of tiles

Use the eTool below to help you with this problem.
Click on the link at right for the full eTool version: CC3 5-5 HW eTool