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an open circle on a number line means the answer is just less than or greater than (< or >), but a closed circle means the answer is less than or equal to, or greater than or equal to (< or > with a line under it)

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8y ago
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Anonymous

Lvl 1
3y ago
Thanks that was very helpful.
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10y ago

An open circle means that the value that it refers to is not part of the valid solution. A close circle indicates that it is.

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Q: What is the difference between an open circle and a close circle on a number line?
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