The key with these problems is to find which function has the closest y-intercept to the graph, and then try to figure out which one best approximates the slope. Here are our options: <span>A. y = x + 4 B. y = 4x + 9 C. y = x + 18 D. y = 3x + 22
Which has the closest approximation of the y-intercept? The y-intercept is not directly given, but we can assume it is less than 10. That leaves us with A and B.
Which has the closest approximation of the slope? The graph, on average, seems to move up about 60 and over about 15. Slope = rise/run = 60/15 = 4. Although the slope isn't exactly 4, it's much closer to 4 than 1, which is slope for option A.
