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Concept

Negative Reciprocal

The negative reciprocal, or opposite reciprocal, of a number is its reciprocal with the opposite sign.

Number	Negative Reciprocal
a/b	-b/a
2	-1/2
- 5/7	7/5
-1/4	4

The slopes of perpendicular lines are negative reciprocals of one another.

Exercises

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