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.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

If f(x) = 6x - 9, what is f(4)?

Back

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

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CCSS.HSF.IF.A.2

Front

What does it mean to find f(2) in function notation?

Back

Finding f(2) means to substitute 2 for the variable x in the function.

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CCSS.HSF.IF.A.2

Front

If f(x) = -3x - 8, what is f(-1)?

Back

f(-1) = -3(-1) - 8 = 3 - 8 = -5.

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CCSS.HSF.IF.A.2

Front

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

Back

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

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CCSS.HSF.IF.A.2

Front

If g(x) = 9x + 24, what is g(3)?

Back

g(3) = 9(3) + 24 = 27 + 24 = 51.

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CCSS.HSF.IF.A.2

Front

What is the output of a function?

Back

The output of a function is the value that results from substituting an input into the function.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

What does the notation f(x) represent?

Back

f(x) represents the value of the function f at the input x.

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CCSS.HSF.IF.A.2

Front

How do you evaluate a function at a specific point?

Back

To evaluate a function at a specific point, substitute the given value into the function's expression.

Tags

CCSS.HSF.IF.A.2

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x-values) for which the function is defined.