
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 in the Cartesian coordinate system $(xOy)$, the parametric equation of line $l$ is $ \begin{cases} x= \frac { \sqrt {2}}{2}t \\ y= \frac { \sqrt {2}}{2}t+4 \sqrt {2}\\ \end{cases} (t$ is the parameter$)$, and the polar coordinate equation of curve $C$ with the origin $O$ as the pole and the positive half of the $x$-axis as the polar axis is $ρ=2\cos (θ+ \frac {π}{4})$.
(I) Determine the relative position of line $l$ and curve $C$;
(II) Let $M$ be any point on curve $C$, find the range of values of $x+y$.

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