
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 ratio of $2x + 3$ to $y - 4$ is constant, and $y = -1$ when $x = 5$, find $x$ when $y = 19$.
A) $-23$
B) $-21$
C) $21$
D) $23$

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