
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
Two places, A and B, are $120$ kilometers apart. A car starts from place B and travels towards place A at a speed of $80$ km/h. Let $x(h)$ represent the time the car travels, and $y(km)$ represent the distance between the car and place A.
$(1)$ Write the relationship between $y$ and $x$, and determine if $y$ is a linear function of $x$;
$(2)$ When $x=0.8$, find the value of $y$.

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