Functions (general)

Which set of ordered pairs does not represent y as a function of x?

• (-2, 4)  (0, 0)  (2, 4)
• (5, 7)  (2, 7)  (-3, 7)
• (-2, 2)  (0, 0)  (-2, 4)
• (1, 2)  (2, 3)  (3, 4)

Which of the following tables represents y as a function of x?

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• 
• 
• 

Which of the following is not a function?

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• 
• 
• 

(1, 0), (5, 2), (10, 3), (10, -3) 

• Function
• Not a Function

Does this set of values represent a function?

• yes, it is a function

• no, it is not a function

Answer explanation

Every input has exactly one output.

Is this relation a function?

• True
• False

Is the diagram a function?

• Function

• Not a function

A relation pairs each input with exactly one output is a

• congruence

• similarity

• function

• mathematical equation

Which set of ordered pairs is a function?

• {(9,5), (3,4),(10,5), (10,-5)}

• {(6,-5), (7,-3), (8,-2), (10,1)}

• {(2,-2), (-2,-2), (2,3), (4,7)}

• {(3,4), (-3,4),(7,4),(-3,-8)}

{(0,3)(4,1)(3,3)(9,4)} Is a function or not?

Then state the domain & range.

• No,

  D: 0, 3, 4, 1, 9

  R: 0, 1, 3, 4, 9

• No,

  D: 3, 1, 3, 4

  R: 9, 3, 1, 4

• Yes,

  D: 0, 4, 3, 9

  R: 3, 1, 4

• Yes,

  D: 0, 4, 3, 9

  R: 9, 3, 4, 3