
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
Determine the value of $k$ such that the line segment joining points $A(-4,0)$ and $B(0,-2)$ is parallel to the line segment joining points $X(0,8)$ and $Y(18,k)$ on the Cartesian plane.

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