Relations & Functions

Why was the cashier's action incorrect in the candy store example?

• The cashier used a function correctly.

• The cashier forgot to charge for one candy bar.

• The cashier charged too little.

• The cashier gave two different prices for the same input.

What is a key characteristic of a function?

• Outputs can be predicted without a rule.

• Each input can have multiple outputs.

• Each input has exactly one output.

• Inputs and outputs are not related.

In the example of reading books, what does each input represent?

• The number of weeks.

• The number of books read.

• The total price of books.

• The number of pages in a book.

Why is the multiplication facts test not considered a function?

• The input of practice hours leads to different scores.

• The test is too difficult.

• The test has only one question.

• Each student gets the same score.

What happens to the input in the 'input times 3' function?

• It is added to three.

• It is multiplied by three.

• It is divided by three.

• It is subtracted from three.

Choose either domain or range to complete the sentence. Write your answer in the space below.

In order for a relation to be a function, the ______ cannot repeat.