Question

1. {(1,4), (1,5), (2,3), (9,28)}

Explanation:

Assuming the problem is to determine if the set of ordered pairs is a function (a common Algebra topic), here's the solution:

Step1: Recall function definition

A function is a relation where each input (x - value) has exactly one output (y - value).

Step2: Check x - values

In the set \(\{(1,4),(1,5),(2,3),(9,28)\}\), the x - value \(1\) is paired with \(4\) and \(5\).

Answer:

The set \(\{(1,4),(1,5),(2,3),(9,28)\}\) is not a function because the input \(x = 1\) has more than one output (\(y = 4\) and \(y = 5\)).