Introduction to Functions

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

Tags

CCSS.8.F.A.1

A relation where every input in matches with exactly one output is called what?

• Relation

• Linear

• Exponential

• Function

Tags

CCSS.8.F.A.1

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

• {12}

• {6, 18}

• {3, 9, 15, 16}

• {13}

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)>

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Is this graph a function or not a function? (Use the vertical line test)

• Function

• Not a 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)}

Tags

CCSS.8.F.A.1

.

• Function

• Not a Function

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

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}

Is it a function?

• It IS a function.

• It IS NOT a function

Tags

CCSS.8.F.A.1