Functions Understanding

Does this relation (1, 3), (2, 5), (2, 7), (4, 9) represent a function?

• Yes

• No

• I don't have a clue.

Does this relation (1, 3), (2, 5), (3, 7), (4, 9) represent a function?

• Yes

• No

• I don't have a clue.

Does this relation (1, 3), (1, 5), (1, 7), (1, 9) represent a function?

• Yes

• No

• I don't have a clue.

Does this relation (1, 3), (2, 3), (3, 3), (4, 3) represent a function?

• Yes

• 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 a function? Explain.

• Yes; Each input has only one output.

• Yes; Each output has only one input.

• Yes; 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.

• Yes; Each input has only one output.

• Yes; Each output has only one input.

• Yes; Each output is the square of the input.

• No; The input 3 has 2 outputs.

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.

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

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