CPM Homework Help : CC3 Problem 5-5

A tile pattern has $5$ tiles in Figure $0$ and adds $7$ tiles in each new figure. Write the equation of the line that represents the growth of this pattern.

Hint 1:

Illustrate the problem.

$5$

Figure $0$

	$5$
$1$	$5$	$1$
Figure $1$

	$5$
$1$	$5$	$1$
$1$	$5$	$1$
Figure $2$

Hint 2:

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

$y=mx+b$

$m=$ the rate of growth between each figure
$b=$ the starting number of tiles

Answer:

$y=7x+5$

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