Relations and Functions Vocabulary Practice

Does the relation represent a function?

(1, 3), (2, 5), (3, 7), (4, 9)

• Yes

• No

• Yes and No

• I don't have a clue

Does the relation represent a function?

(1, 3), (2, 3), (3, 3), (4, 3)

• Yes

• No

• Yes and No

• I don't have a clue

Does the relation represent a function?

(1, 3), (2, 5), (2, 7), (4, 9)

• Yes

• No

• Yes and No

• I don't have a clue

Does the relation represent a function?

(1, 3), (1, 5), (1, 7), (1, 9)

• Yes

• No

• Yes and No

• I don't have a clue

Is the relation shown in the arrow diagram a function? Explain.

• Yes; Each input has only one output.

• Yes; Each output has only one input.

• No; Each input has only one output.

• No; The output 32 has 2 inputs.

Is the relation shown in the table below a function? Explain.

• Yes; Each input has only one output.

• Yes; Each output has only one input.

• No; Each output is the square of the input.

• No; The input 3 has 2 outputs.

The cost to rent a paddleboard for different numbers of hours is shown. Is the cost a function of the rental time?

Explain your answer.

• Yes. Each input has a unique output

• No. Each input does not have a unique output

• No. Each input has a unique output

• Yes. Each input does not have a unique output

Lilly records the age, in years, and the height, in inches, of the starting players on the girls' middle school basketball team. She records them as ordered pairs (age, height):

(11, 62), (12, 64), (13, 65), (13, 67), and (14, 68).

Is this relation a function? Explain.

• Yes; Each height is associated with a unique age

• Yes; Each age is associated with a unique height.

• No; There are 2 heights associated with the age 13.

• No; There are 2 ages associated with the height 65 inches.

• Function
• Not a Function

Is this graph a function or not a function? 

• Function
• Not a Function