IXL - Sets and subsets (Algebra 1 practice)

Which is the set of integers greater than

–

and less than or equal to

–

{

–

}

{

–

}

{

–

}

{

–

}

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Learn with an example

question

Which is the set of integers greater than or equal to

–

and less than or equal to

–

{

–

}

{

–

}

{

–

}

{

–

}

key idea

A set is a collection of objects called elements. The elements of a set can be numbers, letters, or other items.

One way to write a set is in roster

notation.

Roster notation uses curly braces and commas between the elements of the set. For example, this is one way to write the set of whole numbers less than or equal to 5:

{

}

An integer is a positive or negative whole number or 0. It is an element of this set: {… , –2, –1, 0, 1, 2, …}.

solution

You can see the integers that are greater than or equal to

–

and less than or equal to

–

on a number line.

The following integers are elements of the set because they are greater than or equal to

–

and less than or equal to

–

and

–

The integer

–

is an element of the set because it is greater than or equal to

–

The integer

–

is an element of the set because it is less than or equal to

–

So, this is the set of integers greater than or equal to

–

and less than or equal to

–

{

–

}

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Teacher tools

Work it out

Not feeling ready yet? These can help:

H.11Classify real numbers

F.1Prime or composite

F.3Find all the factor pairs of a number

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