Answer: Horizontal axis
Step-by-step explanation:
The general equation of a line is:
where m is the slope of the line, b is the y-intercept of the line, x is the independent variable, and y is the dependent variable.
the slope m represents the rate of change, b is the point where the line crosses the y-axis, the independent variable is the one that does not depend on the value of other variables, this is the case of time.
Since time does not depend on other factors, it will usually be represented by the x-axis, which is the horizontal axis. Therefore, the answer is the horizontal axis.
Answer: Horizontal axis