
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 the line $(1-a)x+(a+1)y-4(a+1)=0$ (where $a$ is a real number) passes through a fixed point P, and point Q lies on the graph of the function $y=x+ \frac {1}{x}$, then the range of values for the slope of line PQ is \_\_\_\_\_\_.

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