Yes, the set \({(1,4),(2,8),(3,12),(4,16),(5,20)}\) is a function. In a function, each input (or x-value) is associated with exactly one output (or y-value). In this set, each first element (1, 2, 3, 4, 5) corresponds to a unique second element (4, 8, 12, 16, 20), meaning each input has a single output. Therefore, it is indeed a function.
Use the set below to answer questions: {(1,4),(2,8),(3,12),(4,16),(5,20)} Is the set a function?
No
Yes
1 answer