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's equation in place of the variable.

Front

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

Back

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

Front

What does f(x) = 19 mean?

Back

It means that the output of the function f for some input x is 19.

Front

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

Back

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

Front

What is the ordered pair representation of f(2) = 4?

Back

The ordered pair is (2, 4).

Front

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

Back

Plug a 1 in for all the x's.

Front

If f(x) = 19, what is the value of x when f(x) = 3?

Back

x = 3.

Front

What does it mean if f(a) = b?

Back

It means that when the input is 'a', the output of the function is 'b'.

Front

How can you express the function f(x) = 2x + 1 in words?

Back

The function takes an input x, multiplies it by 2, and then adds 1.