Answer:
Graph # 4
Explanation:
If regular payments are paid each month, there would be no change in the slope of the line and the slope will be 0.
Amount owed = y
Number of car payments paid = x
So, if there is no change in y, the line will be a straight line parallel to x-axis.
![\rule[225]{225}{2}](https://img.qammunity.org/2023/formulas/english/college/eq413d752mwtrwwenrzwldxt4w1olmf1b3.png)
Hope this helped!
~AH1807