Answer:
The run is the <u>horizontal </u>change between two points along a line
Step-by-step explanation:
The slope of a line can be defined as

On comparing, we can say below mentioned things:
The run is always in the x direction and we take the horizontal axis as x-axis.
And rise is always in the y direction and we take the vertical axis as y-axis.
Therefore, we can conclude that the run is the <u>horizontal </u>change between two points along a line