Question

Devon is having difficulty determining if a relation given in an input-output table is a function. Marco explains to him that in order to tell if the relation in the table is a function, Devon needs to check if any of the output values are repeated. If they repeat and have different input values, the relation is not a function.
If Marco is correct, respond to the following statement:
Summarize Marco's reasoning in your own words.

If Marco is incorrect, respond to the following statement:
Explain what is wrong with Marco's reasoning and provide an example.

Answer 1

Marco is wrong. In order for an input-output table to be a function, there can only be one Y for every X, meaning that X cannot repeat as the same number twice.

Answer 2

Answer:

Marco is incorrect.

Step-by-step explanation:

According to the problem, Marco explains to Devon that in order to twll if the relation in the table is a function, Devon needs to check if any of the output values are repeated. If they repeat and have different input values, the relation is not a fuction.

The last part of Marco's explanation is wrong, because a relation is a function when output values repeat and they have different input values, Marco said it wrong. In the case where input values are not different, then that's a relation, for example, the circle is not a function just a relation, because for one input value there can be two output values.

Therefore, Marco is incorrect.