It looks like you have provided three coordinate points: $Q(-4, 2)$, $R(-2, 4)$, and $S(-1, 1)$. Please let me know what you would like to do with these points. Here are some possibilities:

1. Find the distances between these points.
2. Determine if they form a specific geometric shape (like a triangle).
3. Find the midpoint or slope of the line segments joining these points.
4. Calculate the area of a triangle formed by these points.
5. Verify if they are collinear.

Please clarify your request or let me know if you have a different query in mind!

Tip:

When working with coordinate geometry, always check the relationship between points (such as slope or distance) to understand the geometric properties they define.