8th U5L2 - Intro to Functions

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

If the input is 5, what is the output if the function is defined as f(x) = x + 8?

Back

13

Front

If the input is 3, what is the output if the function is defined as f(x) = 3x?

Back

9

Front

What does it mean when we say the output depends on the input in a function?

Back

It means that the value of the output is determined by the value of the input.

Front

Is the following a function? Input: 'apple', Output: 'ant' and 'apricot'.

Back

No, it's not a function because the input 'apple' has multiple outputs.

Front

What is the output of the function f(x) = 2x if the input is 4?

Back

8

Front

What is the output of the function f(x) = x^2 if the input is 3?

Back

9

Front

If a function is defined as f(x) = x - 2, what is the output when the input is 10?

Back

8

Front

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs.

Front

What is the term for the set of all possible inputs of a function?

Back

Domain.