Exploring Domain and Range with Interval Notation

What symbol is used to represent positive infinity in interval notation?

• []

• ()

• -∞

• ∞

When do we use parentheses in interval notation?

• When the interval is negative

• When the interval does not include the number

• When the interval includes the number

• When the interval is finite

In interval notation, what does an arrow pointing to the right indicate?

• The interval ends at a specific number

• The interval is closed

• The interval extends to negative infinity

• The interval extends to positive infinity

If the left side of a graph starts at 3 with an open circle, how is it represented in interval notation?

• (3,

• [3,

• [3]

• (3]

What is the domain of a function?

• All the y values of a function

• How far the graph extends up and down

• All the x values of a function

• The range of the function

How is a closed circle at a point represented in interval notation?

• With a parenthesis

• With a comma

• With a bracket

• With an arrow

If a graph extends from -2 to positive infinity, how is it represented in interval notation?

• [-2, ∞)

• (-2, ∞)

• (-2, ∞]

• [-2, ∞]

What does an arrow pointing to the left on a graph indicate?

• The interval extends to positive infinity

• The interval ends at a specific number

• The interval extends to negative infinity

• The interval is closed

In interval notation, how is an interval that extends forever to the left and right represented?

• [∞, -∞]

• [∞, -∞)

• (-∞, ∞]

• (-∞, ∞)

What is the range of a function?

• How far the graph extends left and right

• All the x values of a function

• The domain of the function

• All the y values of a function