Functions & Relations

What is the domain of the relation:

{(-1,3), (2,5), (8,1), (-3,1)} ?

• {x|x= -3,-1,2,8}

• {x|x= -3,-1,1,2,3,5,8}

• {x|x= 1,3,5}

• {y|y= 1,3,5}

• {y|y= -3,-1,2,8}

What is the range of the relation:

{(-1,3), (2,5), (8,1), (-3,1)} ?

• {x|x= -3,-1,2,8}

• {x|x= -3,-1,1,2,3,5,8}

• {x|x= 1,3,5}

• {y|y= 1,3,5}

• {y|y= -3,-1,2,8}

Is the relation a function?

{(-1,3), (2,5), (8,1), (-3,1)} ?

• Yes

• No

The diagram above represents a relation, what is the domain?

• {x|x= -11, -4, $\frac{1}{2}$ , 9}

• {x|x= -11, -6, -4, -1, $\frac{1}{2}$ ,2, 3, 5, 9}

• {x|x= -6, -1, 2, 3, 5}

• {y|y= -6, -1, 2, 3, 5}

• {y|y= -11, -4, $\frac{1}{2}$ , 9}

The diagram above represents a relation, what is the range?

• {x|x= -11, -4, $\frac{1}{2}$ , 9}

• {x|x= -11, -6, -4, -1, $\frac{1}{2}$ ,2, 3, 5, 9}

• {x|x= -6, -1, 2, 3, 5}

• {y|y= -6, -1, 2, 3, 5}

• {y|y= -11, -4, $\frac{1}{2}$ , 9}

Does the diagram above represent a relation?

• Yes

• No

The table above represents a relation. What is the domain?

• {x|x= -2, 0, 1, 3, 4}

• {x|x= -2, -1, 0, 1, 3, 4, 5}

• {x|x= -1, 3, 4, 5}

• {y|y= -1, 3, 4, 5}

• {y|y= -2, 0, 1, 3, 4}

The table above represents a relation. What is the range?

• {x|x= -2, 0, 1, 3, 4}

• {x|x= -2, -1, 0, 1, 3, 4, 5}

• {x|x= -1, 3, 4, 5}

• {y|y= -1, 3, 4, 5}

• {y|y= -2, 0, 1, 3, 4}

Is the relation a function?

• Yes

• No

Given the relation below:

{(0,1), (-2,4), (1,7), (x,5)}

What could the value of x be so that the relation is a function?

• 0

• -2

• 1

• 4