All About Functions

How many turning points does the graph of f have?

• 3

• 4

• 5

• 6

What is the domain of the given function?

• (- infinity, -2) U (2, infinity)

• (- infinity, -2] U [2, infinity)

• (2, infinity)

• (-2, 2)

In the graph below, the graph of f is shown in black (dashed). Find the transformation of f that matches the blue graph.

• 2f(-x)

• -2f(x)

• f(-2x)

• -f(2x)

If f(x) = x² + x, what is the expression that represents f(x-1)?

• x² + x

• x² - x

• x² - x - 1

• x² + x - 1

Which of the following is the correct definition of a function?

• A relation where each input has exactly one output

• A relation where each input has multiple outputs

• A relation where each output has multiple inputs

• A relation where inputs and outputs are the same

• All real numbers

• All real numbers except 2

• All real numbers except 0

• All real numbers except -2

Which of the following is an example of a quadratic function?

Which of the following represents a function?