
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
In an experiment, Xiaoqiang fixed the upper end of a spring and hung an object at its lower end. Below are the corresponding values of the length $y$ of the spring and the weight $x$ of the hanging object: Within the allowable range of the spring, write the relationship between the spring length $y$ in cm and the weight of the hanging object $x$ in kg.

| Weight of Hanging Object $x$ (kg) | 0 | 1 | 2 | 3 | 4 | 5 |
|----------------------------------|---|---|---|---|---|---|
| Spring Length $y$ (cm)           | 20| 22| 24| 26| 28| 30|

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