
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
Given that the ground temperature at a certain location is $20^{\circ}\mathrm{C}$, if the temperature decreases by $6^{\circ}\mathrm{C}$ for every $1000m$ increase in altitude, then the functional relationship between temperature $t\left(^{\circ}\mathrm{C}\right)$ and altitude $h\left(m\right)$ is ____.

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