## To answer this question, it seems like you are referring to a previous discussion about horizontal and vertical lines. From what you have explained, it appears that you are trying to understand how to find the equation of a horizontal line passing through a given point (-4,8).

To find the equation of a horizontal line, you can simply set the y-coordinate equal to a constant value. In this case, since the line is passing through the point (-4,8), the equation would be y = 8. This equation represents a horizontal line where the y-coordinate always remains 8, regardless of the x-coordinate.

If you interchange the x and y values, as you mentioned, the horizontal line becomes a vertical line. In this case, the equation would be x = 8. This equation represents a vertical line where the x-coordinate always remains 8, regardless of the y-coordinate.

So, to summarize:

- Equation of horizontal line passing through (-4,8): y = 8

- Equation of vertical line passing through (-4,8): x = 8

I hope this helps clarify your understanding! If you have any more questions or need further explanation, feel free to ask.