Functions

Give the range of the set of ordered pairs: (2, 11), (9, -3), (7, 21), (-8, 6)

• $\left\{-8,\ 2,\ 7.9\right\}$

• $\left\{-3,\ 6,\ 11,\ 21\right\}$

• $-8<x<9$

• $-3<y<21$

Which set of ordered pairs is not a function?

• (1, 3), (2, 7), (3, 8), (4, 11)

• (2, 3), (4, 9), (3, 8), (4, 15)

• (1, 2), (3, 5), (6, 9), (7, 11)

• (-9, 4), (-6, 3), (-2, 8), (0, 21)

What is the test to determine if a graph represents a function?

• Horizontal line test

• Vertical line test

• Heidelberg Uncertainty Test

• Obi Wan Kenobi Test

Does this table represent a function?

• Yes!

• No!

• I Don't Know

What is the range of the graph?

• $-2<f\left(x\right)<10$
  

• $-3<x<3$

• $-2\le f\left(x\right)\le10$

• $-3\le x\le3$

Does this table represent a function?

• Function

• Not a Function

Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

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, -4}
  R:{1, -3, -4}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

• Function
• Not a Function