The question asks to identify the quadrant or axis for the point $(5, -1)$.

Let's break it down:

• The first coordinate, $5$, is positive, meaning the point is to the right of the origin along the x-axis.
• The second coordinate, $-1$, is negative, meaning the point is below the origin along the y-axis.

This places the point in Quadrant IV, where $x$ is positive, and $y$ is negative.

So, the correct answer is Quadrant IV.

Would you like further details or explanations? Here are five related questions to deepen your understanding:

1. How are the four quadrants defined in the coordinate plane?
2. What happens when one or both coordinates are zero?
3. What is the significance of positive and negative values on the x and y-axes?
4. Can you identify points on the x-axis and y-axis?
5. What are the coordinates of the origin?

Tip: Remember, the quadrants are numbered counterclockwise starting from the upper right.