Fit a linear function to data when a scatter plot suggests a linear association.
Estimate the y-intercept of a line of fit
Problem
Use this line-of-fit information to estimate the \(y\text{-}\text{intercept}\): line of fit crosses the \(y\text{-}\text{axis}\) near \(6\).
Big Picture
What this problem is really about
The intercept answers a boundary question: what does the fitted model predict when the input is zero? Trace the line to the vertical axis and interpret that value in context, while checking whether zero lies in the modeled domain before treating the prediction as a plausible real-world baseline.
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