SOLUTION: What is a 1-1 function?

Question 994911: What is a 1-1 function?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What is a 1-1 function?
f(x) is 1 to 1 if, for each value of x there is one unique value of y
and for each value of y there is one unique value of x.
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Ex:: Every line whose slope is defined and not equal to zero is 1-1.
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Cheers,
Stan H.
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