Function Notation

Front

If a question asks you to find f(2), what does that mean?

Back

Let x = 2

Front

If f(x) = 2x + 1, what would be your first step to find f(1)?

Back

Plug a 1 in for all the x's

Front

If f(x) = 2x + 1, find f(1).

Back

f(1) = 3

Front

How would you write y = 2x - 3 in function notation?

Back

f(x) = 2x - 3

Front

If f(x) = -3x - 8, find f(-1).

Back

f(-1) = -5

Front

What is function notation?

Back

A way to represent a function using symbols, typically f(x), where f is the function name and x is the input variable.

Front

What does f(x) represent in a function?

Back

f(x) represents the output of the function f for a given input x.

Front

How do you evaluate a function at a specific value?

Back

Substitute the specific value into the function's equation for the variable.

Front

What is the output of f(x) = 3x + 2 when x = 4?

Back

f(4) = 3(4) + 2 = 14.

Front

What is the domain of a function?

Back

The set of all possible input values (x-values) for the function.