Question

Does this table represent a function ? Why or why not ?

Answer 1

Yes the table represents a function because it go up by 10 on the x-values and 200 in the y-values.

Answer 2

Explanation:

There is only one answer. It is the very definition of what a function is.

The answer is A. That is exactly how a function is defined.

You can have minus numbers and still have a function. B is incorrect.

A function should have different x values. If the sample doesn't have different x values but different y values, you don't have a function C is wrong.

D is wrong. You can have a function if all the y values are different. The x values normally should be as well.