Question

Identify each graph as being a non-linear function, a linear function, or not a function.

Answer 1

What are the 1-4 you have numbered? but to, summarize, if you can draw a vertical line and hit more than one point anywhere on the graph its not a function, so B, and if there are any bends or curves, but still is a function, it's a non linear function, like the other two.