Concept explainers
The dog pound. Otis the puppy grew approximately 11.6 pounds per month between 2.5 and 4 months of age. The graph below shows a line that closely fits the data points. Use the equation of the line given below to predict Otis’s weight at 3 months and at 6 months. Explain why you would be less confid ent in your second estimate.
Equation of line
Otis’s weight
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The Heart of Mathematics: An Invitation to Effective Thinking
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