
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
(2010•Meishan) To welcome the provincial games held in our city, the city organized a trapezoidal flower parade to participate in the opening ceremony, requiring a total of 60 rows, with 40 people in the first row, and each subsequent row having one more person than the previous row. The function relationship between the number of people $y$ in each row and the row number $x$ is.

Present the answer in LaTex format: \boxed{Your answer}
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