Which value of k will allow the following set of ordered pairs to represent a function? {(3,5), (2,6), (k,8), (1,5)}

Answer 1

A function means that every x goes to a different y, so any value for k other than 1,2, or 3 makes this a function.

For example, (2,8) would not work because you already have (2,6).

Note: (1,5) and (3,5) still work because they are DIFFERENT x's going to the same y.