
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
According to actual measurements, the higher the distance from the ground at a certain location, the lower the temperature. The table below reflects the relationship between the temperature $t(^{\circ}C)$ at a certain time of day at a certain location and the distance from the ground $h(km)$. The relationship between $t$ and $h$ is $t=\_\_\_\_\_\_$. (The range of the independent variable is not required)

| Height $(km)$ | $0$ | $1$ | $2$ | $3$ | $4$ |
|---------------|-----|-----|-----|-----|-----|
| Temperature $(^{\circ}C)$ | $20$ | $14$ | $8$ | $2$ | $-4$ |

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