Functions, Functions, Functions

Front

What is the definition of a function?

Back

A function is a relation where every input has only ONE output.

Tags

CCSS.8.F.A.1

Front

Which set of values represents a function? (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

Is the relation a function? Why? (x-value 11 has two y-values)

Back

No, because the x-value 11 has two y-values paired with it.

Tags

CCSS.8.F.A.1

Front

What are all of the x values or inputs called?

Back

Domain.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

Is this mapping a function or not a function? (Example mapping provided)

Back

Not a Function.

Tags

CCSS.8.F.A.1

Front

What is the range in a function?

Back

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

Front

What is the difference between a function and a relation?

Back

A function is a specific type of relation where each input has exactly one output.

Tags

CCSS.8.F.A.1

Front

What does it mean for a function to be one-to-one?

Back

A one-to-one function means that each output is paired with exactly one input.

Front

What is a vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.

Front

What is an example of a function in real life?

Back

A vending machine is a function; each button (input) gives one specific item (output).

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1