Tauri is investigating how long his phone's battery lasts (in hours) for various brightness levels (on a scale of 0-100). His data is displayed in the table and graph below. Brightness Level (x) Hours (y) Hours Click Download CSV to download csv file of data or copy/paste the data into Excel. After downloading the file, you may want to save it as an Excel Workbook. 8 7 6 5 ch C₂ H 10 20 30 18 23 26 35 37 4.3 5.5 5.7 3.7 5.7 5.3 • 40 50 60 Brightness Level 44 73 94 2.5 3.7 70 ● 80 90 100 11 a b. Interpret the slope in context. Tauri should expect a. Find the equation for the line of best fit. Keep at least 4 decimals for each parameter in the equation. Note the negative sign in the middle of equation. ? ✓ Obrightness level goes up by 0.0329 per additional hour. Obrightness level goes down by 0.0329 per additional hour. O hours go down by 0.0329 per each additional brightness level. hours go up by 0.0329 per each additional brightness level. a

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