Functions, Relations, Dependent Variables, Independent Variables

The graph of a relation is shown below. Is the relation a function?

• Yes

• No

• Cannot be determined from a graph

A set of ordered pairs is called what?

• Coordinates

• Relation

• Function

• Vertical Line Test

A relation where every input yields one and only one output is called what?

• Relation

• Linear

• Exponential

• Function

All of the x values or inputs are called what?

• Domain

• Range

• Relation

• Function

All of the y values or outputs are called what?

• Domain

• Range

• Relation

• Function

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Is the relation a function? Why.

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

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

Which of the following sets of ordered pairs define a function?

• {(1,3), (4,2), (2,0), (3,4)}

• {(0,1), (1,2), (0,3), (1,4)}

• {(0,2), (1,3), (4,3), (1,2)}

• {(1,1), (1,2), (1,3), (1,4)}

What is a special type of relation in which every element in the domain is mapped to exactly one element in the range?

• Ordered Pairs

• Function

• Range

• Domain

Which of the following is a linear inequality in two variables?

• 4x − 5 > 9

• x + 4y = 7

• 2x − 3y ≥ 10

• 6 + 7y < 11