Intro to Functions

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input from a set of inputs.

Tags

CCSS.8.F.A.1

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

The range is the set of all possible output values (y-values) for a function.

Front

How can you determine if a graph represents a function?

Back

A graph represents a function if no vertical line intersects the graph at more than one point (Vertical Line Test).

Front

What does it mean if a relation is not a function?

Back

A relation is not a function if at least one input is associated with more than one output.

Tags

CCSS.8.F.A.1

Front

Identify the function from the following sets: (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4).

Back

(6,-5) (7, -3) (8, -1) (9, 1) is a function.

Tags

CCSS.8.F.A.1

Front

What is the Vertical Line Test?

Back

The Vertical Line Test is a method to determine if a curve is a function by checking if any vertical line crosses the curve more than once.

Front

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

Back

D: {0, 1, 2, -4}, R: {1, -3, -4}.

Front

What are the x-values in a function called?

Back

The x-values are called the domain.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

What are the y-values in a function called?

Back

The y-values are called the range.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1