The ratio of the rise/run has to be the same in order to have a constant slope (option C).
Slope, in mathematics, is the ratio of the vertical and horizontal changes between two points on a surface or a line.
The slope is zero if the line is horizontal and undefined if it is vertical.
The vertical change between two points is called the rise while the horizontal change is called the run. This means that the slope equals the rise divided by the run.
Therefore, this suggests that the ratio of the rise/run has to be the same in order to have a constant slope.
Learn more about slope at: https://brainly.com/question/3605446
#SPJ1
