Relations and Functions Quiz 2

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

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Evaluate f(-4) for the function f(x)=3x²-5

• f(-4) = 43
• f(-4) = 139
• f(-4) = -52
• f(-4) = -149

Is the graph pictured a function?

• Yes
• No

Evaluate each function for the given inputs.
For f(x) = -2x + 4,
find f(x) when x = -5

• f(-5) = -6
• f(-5) = -3
• f(-5) = 14
• f(-5) = 2

Give the domain and range of the relation.
{(-2,-1), (-1,0), (0,-1), (1,0), (2,-1)}

• D: {-2, -1, 0, 1, 2}
  R: {-1, 0}
• D: {-1, 0}
  R: {-2, -1, 0, 1, 2}
• D: {-2, -1, 0, 1, 2}
  R: {-1, -1, -1, 0, 0}
• D: {-2 < x < 2}
  R: {-1 < y < 0}

The set of x-coordinates of the ordered pairs of a relation is called?

• range
• relation
• domain
• correlation

For a graph of a relation to pass the vertical line test the line may only touch the graph:

• one time.
• two times.
• three times.
• not at all.

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

What is the collection of output values of a function called?

• Range
• Input
• Domain
• Function