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Origin

The point of intersection of the $x$-axis and $y$-axis in a rectangular coordinate system.

 

Ordered Pair

 

Order of Operations

The order in which to perform operation when evaluating expressions with more than one operation.

 

Opposites

Two real numbers are opposites of each other if they lie the same distance from, but on opposite sides of, zero.

 
Glossary: O

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