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Which graph shows a function whose inverse is also a function?

Which graph shows a function whose inverse is also a function?-example-1

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Answer:

To do this, you imagine a vertical (up and down) line moving across your graph from left to right. It should only be touching the line at one point at a time. If it is touching more than one point on the line at a time, the line is not a valid function. The first line and its inverse both pass the test.

Explanation:

User Rikon
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Answer:

1st

Explanation:

User Seli
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