(+30 points) Graphs & Functions Discussion A company creates a database for its customers in which each customer is identified by their phone number. In this discussion, explore whether or not this is a function with your classmates. In your first post, address the following:

Assign one variable as the input and the other variable as the output for this scenario. Is this relation a function? Justify your answer using the definition of a function, and explain your reasoning carefully.
Do you think this is a good setup for the company’s database? Describe any pitfalls you see in this setup.
Suggest an alternative identification system for the company’s database.

Write at least 150–300 words.

I'll give an extra 30 points if answered correctly.