Intro to Functions

What is a function?

• A relationship between two sets of information.

• A special relationship between two sets of information.

• A rule applied to inputs.

• The result of applying a rule.

In the context of functions, what is an input?

• The result after a rule is applied.

• The information we already know.

• The rule that inputs follow.

• The second set of information.

What is the result called after a rule is applied to the inputs in a function?

• The input.

• The rule.

• The output.

• The relationship.

What is the essential condition for a relationship to be considered a function?

• Each input must have multiple outputs.

• Each output must have exactly one input.

• Each input must have exactly one output.

• The rule must be complex.

A vending machine has a button '2' that first dispenses gum, and later dispenses a water bottle when pressed again. Is this vending machine an example of a function?

• Yes, because it dispenses items.

• Yes, because it has multiple inputs.

• No, because one input (button 2) produces more than one output (gum and water).

• No, because it should only dispense one type of item overall.