Determining Functions from Ordered Pairs

The video tutorial explains how to determine if a set of ordered pairs represents a function. It begins by defining functions and ordered pairs, emphasizing the importance of each input having a unique output. Various examples, such as a fast food menu and test scores, are used to illustrate the concept. The tutorial also discusses scenarios where a relation is not a function, such as when an input has multiple outputs. The lesson concludes with a review of function concepts, highlighting the importance of matching X values to Y values to identify functions.

What is the main characteristic of a function in terms of inputs and outputs?

• Each output can have multiple inputs.

• Each input can have multiple outputs.

• Each input has a unique output.

• Each output has a unique input.

How can you determine if a set of ordered pairs is a function?

• By checking if each Y value has a unique X value.

• By checking if each X value has a unique Y value.

• By ensuring all Y values are the same.

• By ensuring all X values are the same.

In the context of a fast food menu, why is it considered a function?

• Because each meal can be ordered multiple times.

• Because the menu changes daily.

• Because each meal has a unique price.

• Because each meal ordered results in a specific dish.

Why is the example of Greg's test scores not considered a function?

• Because Greg's scores were not recorded.

• Because Greg scored the same as another student.

• Because Greg has two different scores.

• Because Greg's scores were too high.

What rule is suggested in the example of losing points for incorrect answers?

• You gain five points for every problem wrong.

• You lose points for each correct answer.

• You lose five points for every problem wrong.

• You gain points for each correct answer.