Question

Create a set of at least 4 ordered pairs and tell whether or not the relation is a function. Why do you say so?

Answer 1

`R=\{(1,2),(2,4),(3,6),(4,8),(5,10)\}`

The set is a function because each element x of each pair (x, y) has a single corresponding y.

Answer 2

Okay if you want a function each set has a rule. So let's say f(x)=3x+4. Then just follow the rule and the result you get from following the rule will be your y coordinate. Let's try 1 for x. (3*1)+4 = 7. So one of the sets for this function would be (1,7). Now if you didn't want a function just grab ordered pairs that don't have a specific rule to them