Determine It Is a Function

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Answer explanation

If a graph passes the "vertical line test", it means every input (x-value) has no more than one output (y-value) associated with it!

If a graph fails the "vertical line test", it means that at least one input (x-value) has more than one output (y-value) associated with it. Not every input has exactly one output.

Which relation describes a function? What makes it a function?

• {(-2,3),(-2,5),(-6,7)} Each member of the range is unique.

• {(2,3),(3,3),(3,4)} Each member of the domain and range is positive.

• {(2,3),(3,3),(3,4)} Each member of the domain and range is a real number.

• {(-2,3),(-3,3),(-4,3)} Each member of the domain is assigned exactly one member of the range.

Tags

CCSS.8.F.A.1

Determine whether the relation shown here is a function. Explain your answer.

• function, an input has 1 output

• function, an input has 2 different outputs

• function, no output has 2 different inputs

• not a function, an input has 2 different outputs

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

Which graph represents a function?

• 
• 
• 
• 

Which table does NOT represent a function?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

Is this  graph a function?

• Function

• Not a Function

Determine if the relation above is a function:

• Function

• Not a function

Tags

CCSS.8.F.A.1

Determine if the relation above is a function:

• Function

• Not a function

Tags

CCSS.8.F.A.1

Determine if the table above is a function:

• Function

• Not a function

Tags

CCSS.8.F.A.1