Jose is creating patterns with square bricks in his backyard to highlight his gardens. Click on the brick pattern to view the next pattern.

1. Use your notes to complete a table like the one below. Click on the blanks to check your answers.

   Pattern Number	1	2	3	4	5
   Number of Bricks	Interactive button. Assistance may be required. _______ 1	Interactive button. Assistance may be required. _______ 3	Interactive button. Assistance may be required. _______ 5	Interactive button. Assistance may be required. _______ 7	Interactive button. Assistance may be required. _______ 9

2. Describe the pattern.
   
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   The pattern starts with one brick; each pattern after the first is two more than the pattern before it.

   The relationship between the number of bricks and the pattern number is:
   B = 2P − 1
   B is the number of bricks and P is the pattern number.

3. Describe the function.
   
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   In the function, the pattern number, P, is the independent variable, the number of bricks, B, depends on the pattern number, and the constant is -1. In order to find the number of bricks in a particular pattern, the pattern number is doubled and decreased by one.
4. Can B ever be a negative number? Why or why not?
   
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   Check Your Answer

   No, Jose will either put a brick down or not. There will never be a negative number of bricks.

When writing a verbal description it is important to mention if there are any restrictions, especially with the independent variable.