It seems that the graph wasn't included in your message. Could you upload the graph, or describe the key features such as the slope and y-intercept? With this information, I can help determine the best equation to represent the relationship between $x$ and $y$.

Feel free to upload the graph or describe it further!

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Here are 5 related questions you might be interested in:

1. How do you find the slope of a line from a graph?
2. What is the y-intercept, and how can you determine it from a graph?
3. How can we write the equation of a line in slope-intercept form $y = mx + b$?
4. How do different slopes and intercepts affect the graph of a linear equation?
5. What is the difference between positive and negative slopes?

Tip: The slope is the change in $y$ for every unit change in $x$. You can calculate it using two points on the line.