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post test: comparing and building functions
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drag the tiles to the correct boxes to complete the pairs.
match the one-to-one functions with their inverse functions.
f(x)=1-10
f(i)= 325
inverse function
function
-
2)=5.
1-
1)= 1+10

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.