Topic 3 Review (8CC enVision)

Front

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

Back

No, because the x-value 4 has multiple y-values.

Tags

CCSS.8.F.A.1

Front

Is the relation with x-value 11 having two y-values a function?

Back

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

Tags

CCSS.8.F.A.1

Front

A relation is a function when...

Back

the input is only with one output.

Tags

CCSS.8.F.A.1

Front

Is this mapping a function: {(1,2), (2,3), (3,4)}?

Back

Yes, it is a function because each input has one output.

Tags

CCSS.8.F.A.1

Front

Which set of values is not a function? (3,4) (4,-3) (7,4) (3,8)

Back

This set is not a function because the input 3 has two different outputs.

Tags

CCSS.8.F.A.1

Front

What is a function?

Back

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

Tags

CCSS.8.F.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 the vertical line test?

Back

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

Front

If a relation has the pairs (1,2), (2,3), (3,4), is it a function?

Back

Yes, because each input has one unique output.

Tags

CCSS.8.F.A.1

Front

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

Back

Each input has a unique output and each output corresponds to one input.