SOLUTION: determine whether the following set is a function and justify your answer {(2,5), (4,6), (-2, 5)}

Question 3831: determine whether the following set is a function and justify your answer
{(2,5), (4,6), (-2, 5)}

Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
These 3 data points do constitute a function.

However, there is no inverse function, since this would have the value 5 mapping to either +2 or -2. This one-to-many mapping is NOT allowed in a function. A function should have one-to-one mapping or many-to-one is acceptable too (as in +2 and -2 both mapping to the same value, 5).

Hope this helps.

jon
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