Question

Which graphs represents a function?

Answer 1

Answer: The second one is because there can't be two y's in a straight line of a function and all of the other graphs have two y's in a line.

Explanation:

Answer 2

Answer: The one below the top.

Step-by-step explanation: In order to tell if it is a function or not, you need to do the vertical line test. By examining the graph you can see that majority of the graphs has two points in the same x-axis. The only one that pasts the test is the graph below the top one.