Question 1

What is an interval

Accepted Answer

It is all the real numbers between two given numbers.

Question 2

What is an open interval?

Accepted Answer

It is an interval where the endpoint/s are not included.

Question 3

What is a closed interval?

Accepted Answer

It is an interval where the endpoint/s are included.

Question 4

What is the graph of a linear inequality?

Accepted Answer

Set of points.

Question 5

Select the correct interval notation that describes {x / a ≥ x }.

Accepted Answer

( -∞ , a ]

Answer

[ -∞ , a )

Answer

[ -∞ , a ]

Answer

( -∞ , a )

Question 6

Select the correct interval notation that describes { x / a $\le$ x $\le$ b }

Accepted Answer

[ a, b ]

Answer

( a, b ]

Answer

[ a, b )

Answer

( a, b )

Question 7

Select the correct interval notation that describes {x / a $\le$ x }.

Accepted Answer

( a , ∞ )

Answer

[ a , ∞ ]

Answer

[ a , ∞ )

Answer

( a , ∞ ]

Question 8

Select the correct interval notation that describes { x / a < x < b }

Accepted Answer

( a, b )

Answer

[ a, b )

Answer

( a, b ]

Answer

[ a, b ]

Question 9

Select the correct interval notation that describes { x / x $\le$ a }

Accepted Answer

[ a , ∞ )

Answer

( a , ∞ ]

Answer

( a , ∞ )

Answer

[ a , ∞ ]

Question 10

Select the correct interval notation that describes { x / x $\le$ a }

Accepted Answer

( a , ∞ )

Answer

( a , ∞ ]

Answer

[ a , ∞ ]

Answer

[ a , ∞ )

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