3-1: Understand Relations and Functions

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

• Yes

• No

• I don't have a clue.

Tags

CCSS.8.F.A.1

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

• Yes

• No

• I don't have a clue.

Tags

CCSS.8.F.A.1

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

• Yes

• No

• I don't have a clue.

Tags

CCSS.8.F.A.1

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

• Yes

• No

• I don't have a clue.

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1

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)

Tags

CCSS.8.F.A.1

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

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1