Functions and Relations

Is this mapping diagram a function or not a function?

• Function

• Not a function

Is this table a function or not a function?

• Function

• Not a function

Is this graph a function or not a function?

• Function

• Not a function

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (3,4) (4,-3) (7,4) (3, 8)

• (2, -2) (5, 9) (5, -7) (1, 4)

Is this graph a function or not a function?

• Function

• Not a function

Is this graph a function or not a function?

• Function

• Not a function

Give the domain and range. Tell if it is a function.

• D: {-4, -2, 0, 2}

  R: {-2, -2, 1, 1}

  Function

• D: {-4, -2, 0, 2}

  R: {-2, 1}

  Function

• D: {-4, -2, 0, 2}

  R: {-2, -2, 1, 1}

  Not a Function

• D: {-4, -2, 0, 2}

  R: {-2, 1}

  Not a Function

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}

  R: {0, 1, 2, -4}

• D:{0, 1, 2, 3, 4}

  R:{1, -3, -4}

• D:{0, 1, 2, -4}

  R:{1, -3, -4}

Evaluate the function: f(x)=4x+5

f(4)=

• 21

• -31

• -11

• 25

Evaluate the function f(x)=x+3

f(x) = -5

• -2

• -8

• -1

• 7