Wk2Bl4 Quiz (Interval Notation)

What is an interval in mathematics?

• A set of real numbers with no specific order

• A set of real numbers with the property that any number between two numbers in the set is also included

• A set of imaginary numbers

• A set of numbers with only one endpoint

What do brackets [ ] indicate in interval notation?

• An endpoint is included in the interval

• An endpoint is not included in the interval

• The interval is infinite

• The interval is empty

How do you determine if endpoints are included or excluded in interval notation?

• By using commas

• By using brackets [ ] for included and parentheses ( ) for excluded

• By using semicolons

• By using colons

When should you use square brackets in interval notation?

• When the endpoint is excluded

• When the endpoint is included

• When the interval is unbounded

• When using the union symbol

What is the purpose of using the union symbol in interval notation?

• To represent unbounded intervals

• To combine separate intervals

• To exclude endpoints

• To include endpoints

What do parenthesis ( ) mean when used in an interval?

• The endpoints are included

• The endpoints are not included.

• It means the end points go to infinity

• It means that you need to multiply the input and output together.

• -9 ≤ f(x) ≤-2

• -8 ≤ f(x) ≤-4

• -2 ≤ f(x) ≤ 9

• -9 ≤ f(x) ≤ 9

• -6 ≤ (x) ≤ 6

• -3 ≤ (x) ≤ 7

• -6 ≤ (x) ≤ -4

• -6 ≤ (x) ≤ 7

What does the Domain refer to in a graph?

• The X-axis

• The Y-axis

• The Origin

• (2,3)

What does the range refer to in a graph?

• The X-axis

• The Y-axis

• The Origin

• (4,2)