8.EE.6 Checkpoint 2.3

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 ordered pair could you add to the following list of points to create a function? (3, 5) (4, 9) (2, 5)

Back

(1, 9)

Tags

CCSS.8.F.A.1

Front

Is the relation {(4,5), (4,-7), (4,2), (4,0), (4,9)} a function?

Back

No, because the input 4 has multiple outputs.

Tags

CCSS.8.F.A.1

Front

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

Back

Function, because each input has a unique output.

Tags

CCSS.8.F.A.1

Front

Which graph does NOT pass the vertical line test?

Back

Graph 1, because it has multiple points with the same x-value.

Front

What is the vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line intersects the graph at more than one point, it is not a function.

Front

What are inputs and outputs in a function?

Back

Inputs are the x-values, and outputs are the corresponding y-values.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs.

Tags

CCSS.8.F.A.1

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers (x, y) that represent a point on a graph.

Tags

CCSS.5.G.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.