What is a Function?

Does this mapping diagram represent a function?

• No, because an input value goes to multiple output values
• Yes, because each input goes to one and only one output

Tags

CCSS.8.F.A.1

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

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

• No, because each x-value has only one y-value paired with it.

Tags

CCSS.8.F.A.1

Is this mapping a function or not a function? 

• Function
• Not a Function 

Tags

CCSS.8.F.A.1

Does the table below represent a function?

• Yes, it represents a function because each input is paired with exactly one output.

• No, it does not represent a function because not every input is paired with exactly one output.

Tags

CCSS.8.F.A.1

Which of these tables represent a function?

• A
• B
• C
• D

Tags

CCSS.8.F.A.1

Is this a function? Explain.

• Yes; each x-value has one corresponding y-value.
• No; it is not a straight line.
• Yes; it passes the vertical line test.
• No; there is a line connecting the dots.

Tags

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSF.IF.B.5

Does the graph below represent a function?

• Yes, it represents a function because each input is paired with exactly one output.

• No, it does not represent a function because not every input is paired with exactly one output.

Tags

CCSS.8.F.A.1

Does the following set of ordered pairs represent a function?
 $\left\{\left(1,\ -2\right),\ \left(2,\ 1\right),\ \left(3,\ 6\right),\ \left(4,\ 13\right),\ \left(5,\ 22\right)\right\}$  

• Yes, it represents a function because each input is paired with exactly one output.

• No, it does not represent a function because not every input is paired with exactly one output.

• Yes, because the x-value 1 has two y-values paired with it.

• No, because the x-value 1 has two y-values paired with it.

Tags

CCSS.8.F.A.1