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Mathematics 18 Online
OpenStudy (anonymous):

Find the inverse of the relation {(5/3,9), (4,6), (-1/2,5) , (0,2) , (7,0))}

OpenStudy (anonymous):

@ybarrap I wasn't in class when my teacher discussed this

OpenStudy (ybarrap):

Do you know what inverse means?

OpenStudy (ybarrap):

This is actually very simple.

OpenStudy (ybarrap):

A function is I give you a number, you give me a different number An inverse function I give you the number you gave me and you give me the number I gave you back in the first place. So - <0,2> means I give you a 0 and you give me a 2 The \(\mathbf{inverse}\) is <2,0> I give you a 2 and you give me back the 0 I gave you at first.

OpenStudy (anonymous):

for each ordered pair, switch x and y, put them in a set. There you have your inverse

OpenStudy (anonymous):

So you give me 2,0 I give you 0,2

OpenStudy (ybarrap):

You need to be careful though. For functions, you have to have a unique output for every input. Same with inverses.

OpenStudy (anonymous):

yep

OpenStudy (ybarrap):

That's right @michelle010d

OpenStudy (anonymous):

I got it right

OpenStudy (ybarrap):

nice

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