Which of these graphs represents a function?

first and second

Step-by-step explanation:

the last 2 have angles wich make that value given by several numbers

Step-by-step explanation: Here were given 4 relations in the form of graphs and were asked to determine which one represents a function.

In this situation, we would use what is called the vertical line test.

In other words, if we can draw a vertical line that passes through

more than one point on the graph, then the relation is not a function.

Notice that in this problem, every vertical line draw on a

graph passes through more than 1 point except for W.

So W represents a function.