Question

Given the set of ordered pairs: {(1,3), (2,7), (x,5), (6,4)}.

What is a value for x that would NOT make the set a function? Explain why.

Answer 1

2

Explanation:

2 is a value of x that would not make the set a function because a function can't have multiple coordinates wit hthe same domain (x-coordinate). 2 is a domain that has already been used in the point (2,7). If this is used in (x,5), the point would become (2,5) and repeat a domain.

Note:

The x-coordinate could also be 1 or 6 because they have been used as domains as well.

Hope it helps!