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

How do you evaluate a function at a specific value?

Back

To evaluate a function at a specific value, substitute the value into the function in place of the variable. For example, to find f(2) for f(x) = 3x + 1, replace x with 2: f(2) = 3(2) + 1 = 7.

Front

What does f(1) mean in function notation?

Back

f(1) represents the output of the function f when the input is 1.

Front

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

Back

f(1) = 2(1) + 1 = 3.

Front

How do you read f(x)?

Back

f(x) is read as 'f of x'.

Front

What is the output of f(x) = 6x - 9 when x = 4?

Back

f(4) = 6(4) - 9 = 24 - 9 = 15.

Front

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

Back

In function notation, it is written as f(x) = 2x - 3.

Front

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

Back

The first step is to plug a 1 in for all the x's.

Front

If f(x) = 3x^2, what is f(2)?

Back

f(2) = 3(2^2) = 3(4) = 12.

Front

What does the notation f(x) indicate?

Back

f(x) indicates a function named 'f' with 'x' as the input variable.