Which of theses graphs represent a function

W only

Step-by-step explanation:

A function outputs for every point in the domain (horizontal axis or part of it) one and only one value of y. The easiest way to find out which one is a function is to grab a pen, or a ruler, or the edge of a piece of paper, put it parallel to the y axis, and scan the graph. if you touch your graph more than once (zero is still fine! means the function doesn't exist there) you're not dealing with a function.

2nd one in the first row is correct

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent