This question asks you what variable represents the slope of a line.
Your answer would be the variable "m"
In the standard slope equation, the equation is:
y = mx + b
Where as:
m = slope
b = y-intercept
Whenever you change "m" in the equation, you would see that the slope will change as well.
The bigger your "m" is, the steeper your slope is. The smaller "m" is, the less steep your slope would be.
Answer:
"m"