Functions

Front

What is a function?

Back

A function is a relation where every input has only ONE output.

Front

What does it mean for a mapping to be a function?

Back

A mapping is a function if each input (x-value) corresponds to exactly one output (y-value).

Front

Is the mapping {(1, 2), (2, 3), (1, 4)} a function?

Back

Not a Function, because the input '1' has two different outputs (2 and 4).

Front

If the function rule is x - 4, what is the output when the input is 5?

Back

1

Front

If the function rule is x + 3, what is the input if the output is 10?

Back

7

Front

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

Back

8

Front

What is the output of the function f(x) = x^2 when x = -3?

Back

9

Front

If the function rule is 3x + 1, what is the output when the input is 2?

Back

7

Front

What is the definition of an input in a function?

Back

An input is the value you provide to a function to get an output.

Front

What is the definition of an output in a function?

Back

An output is the value that results from applying the function