Function or Relations

1. Let 𝐹 be a set of ordered pairs such that {(−3,5),(3,0),(2,2)}. Which of the following statements about the relation is true?

• The relation is a function because no value in the domain goes to multiple values in the range.

• The relation is a function because all values in the range are different.

• The relation is not a function because one value in the domain goes to multiple values in the range.

• The relation is not a function because there is an ordered pair where the domain is equal to the range.

Which choice also represents the relation shown in the sets below as correct ordered pairs?

• {(1,2),(2,4)}

• {(2,1),(4,2),(6,2)}

• {(1,2),(2,4),(2,6)}

• {(2,2),(2,4),(2,6)}

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

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.

Is the relation above a function?

• Yes, because it doesn’t show any repeating 𝑥 values in the domain.

• Yes, because every 𝑦 value in the range is different.

• No, because one 𝑥 value in the domain goes to multiple different 𝑦 values in the range.

• No, because there is an 𝑥 value in the domain that is equal to a 𝑦 value in the range.

What is the domain of this graph?

• D = { 2,3,-5,-3,-3,-5}

• D = {-5, -3, 2 }

• D = {-5, -3, 3}

• D = {-5, -3}

What is the range of this graph?

• R = { 2,3,-5,-3,-3,-5}

• R = {-5, -3, 2 }

• R = {-5, -3, 3}

• R = {-5, -3}

The left grouping in a mapping is the...

• domain.

• range.

• y-axis.

• relation.

What is the range of the following graph?

• -5, -1,  0 , 1, 5
• -4, -2, 0, 3, 6
• (-4, 1)  ( 6, 0)
• (6, 0)

Is this table a function or not a function? 

• Function
• Not a Function