Introduction to Functions

Which of the following statements is true about the graph shown?

• f(20) = 3

• f(20) > f(7)

• There is no y- intercept.

• There is no x- intercept.

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

Which relation is a function?

• {(2, 3) , (1, 5) , (2, 7)}

• {(-1, 5) , (-2, 6) , (-3, 7)}

• {(11, 9) , (11, 5) , (9, 3)}

• {(3, 8) , (0, 8) , (3, -2)}

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain.
Remember:  Domain is x 
(x,y)

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}

• D:{0, 1, 2, -4}
  R:{1, -3, -4}

• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

What is the range of the mapping?

• {1, 2, 4}

• {0, 1, 2, 3}

• {0, 3}

• {1, 4}

Which relation does the mapping show?

• <(0, 1), (1, 2),(3, 4)>

• <(1, 0), (2, 1), (2, 2), (4, 3)>

• <(0, 1), (1, 2), (2, 2), (3, 4)>

• <(1, 0), (2, 1), (4, 3)>

What is the domain of the relation shown in the table?

• {12}

• {6, 18}

• {3, 9, 15, 16}

• {13}

Is it a function?

• It IS a function.

• It IS NOT a function

Is it a function?

• It IS a function.

• It IS NOT a function