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# Inverses by Mapping

## Reflect points from f(x) across the line y = x.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Inverses by Mapping

by CK-12 //at grade
Find the inverse of a trig function by mapping
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## Inverse Functions

by CK-12 //at grade
Inverses by Mapping Interactive
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## Animation: Inverse Function

by CK-12 //at grade
Shows why a function must be one-to-one in order to have an inverse function.
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