CPM Homework Help : GB8I Problem 2-6

A tile pattern has five tiles in Figure 0 and adds seven tiles in each new figure. Write a linear equation that represents this pattern.

Step 1:

Illustrate the problem. Here is one possibility.

tile

Figure 0

tile	tile	tile	tile
	tile	tile
	tile	tile
	tile	tile
	tile	tile

Figure 1

tile	tile	tile	tile	tile
tile	tile	tile	tile	tile
	tile	tile	tile
	tile	tile	tile
	tile	tile	tile

Figure 2

Step 2:

How many tiles would Figure 3 have?

Step 3:

The figure number is the variable $x$ . The pattern started with $5$ tiles and increased $7$ more for each additional figure. Use this information and the eTool below to find the equation.

Use the eTool below to write the equation of the line that represents the growth of the pattern by completing the table.
Click the link at the right to view full version of the eTool: Int1 2-6 HW eTool.