Question

Is this a function or not? How do I tell? {(0, 1), (2, 1), (3, 2), (4, 2)}
Help please!

Answer 1

First, plot the points into the graph and see the behavior of the function.

Answer 2

From there, we can conclude whether the function is a function or not.

Answer 3

Okay, will do. Then how can I tell?

Answer 4

@Zale101 After I plot them, how can I tell?

Answer 5

If one x value has more than y values that it's not a function.
For example, if it follows this kind of behavior.
See the points there? one x value has multiple y-values