Function Notation

Front

What is function notation?

Back

Function notation is a way to represent a function using symbols, typically written as f(x), where 'f' is the name of the function and 'x' is the input variable.

Front

If f(x) = 2x + 1, what does f(1) equal?

Back

f(1) = 3

Front

How can you represent the output of a function?

Back

You can represent the output of a function as an ordered pair (input, output), for example, (2, 4) if f(2) = 4.

Front

Given g(x) = 4x - 7, what is g(-9)?

Back

g(-9) = -43

Front

What is the first step to evaluate f(1) if f(x) = 2x + 1?

Back

Plug a 1 in for all the x's.

Front

If f(x) = -2, how do you find x?

Back

You need to solve the equation f(x) = -2 for x.

Front

What does it mean if f(2) = 4?

Back

It means that when the input is 2, the output of the function f is 4.

Front

What is the output of a function?

Back

The output of a function is the value that results from applying the function to an input.

Front

How do you write a function in ordered pair form?

Back

You write it as (input, output), for example, if f(3) = 5, it can be written as (3, 5).

Front

What is the significance of the variable x in f(x)?

Back

The variable x represents the input value for the function f.