Tiara is training to run the mile for an upcoming high-school track meet and has gathered data from each practice session.

A scatter plot contains ordered pairs 15,12.4 and 30,10.7 and 45,9.5 and 50,9 and 60,7 and 70,6 and 90,5.8. A line of fit is drawn through ordered pairs 5,12 and 100,5. Segments drawn from the ordered pairs to the line of fit measure 1.1 and 0.5 and 0.5 and 0.4 and negative 1.0 and negative 1.2.

Use the scatter plot, along with the line of fit and residuals to answer the questions.

Part A: Determine and interpret the strength of the model in context. Explain how you determined your answer.

Part B: Determine and interpret the direction of the model in context. Explain why your answer makes sense.