Use scatter plots to represent two quantitative variables and fit functions to model relationships.
Use a fitted model to predict an output from a given input
Problem
Use this fitted model to predict the output when the input is \(6\): \(y=2x+5\).
Big Picture
What this problem is really about
A fitted model turns an input into a predicted output through direct substitution. Replace only the input variable with the requested value, keep every coefficient and constant intact, and evaluate multiplication or powers before addition so the model’s structure is preserved.
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