Question

Does the following relation represent a function? {(16,7), (7,26), (15,16), (-7,15), (-8,26)} ?

Yes, No, There is not enough information to answer this question

Answer 1

The difference between a relation and a function is that a relation can have many outputs for a single input, but a function has a single input for a single output.

You’re set of pairs are part of a function . There are no two same inputs(x) for different outputs, Each x and y pair has different x values

For example (2,4) (3,7) (2,7) (9,4) - That is not a function - this is because 2 is used twice, so that would be a relation