Question

An electrician charges a flat fee for each job, plus an hourly rate for each hour he takes to complete the job. The total cost of the job can be modeled by the equations y = 50 + 65x. What does the independent variable represent in this situation?

Answer 1

Answer: The independent variable = x which represent the the number of hours taken to complete the job.

Explanation:

• Independent variable is the variable on which dependent variable is dependent.

In the given function: y = 50 + 65x, x = Number of hours, y = Total cost of the job.

Here, total cost of the job depends on the number of hours.

So the independent variable = x which represent the the number of hours taken to complete the job.