Candy The following data represent the weight (in grams)

Chapter , Problem 4.2.17

(choose chapter or problem)

Candy The following data represent the weight (in grams) of various candy bars and the corresponding number of calories. (a) Draw a scatter diagram of the data treating weight as the independent variable. (b) What type of relation appears to exist between the weight of a candy bar and the number of calories? 7 3 SECTION 4.2 Building Linear Functions from Data 291 (c) Graph the line found in part (b) on the scatter diagram. I,: (Ii) Use a graphing utility to find the line of best fit. 9 6 - 15 118 (e) Use a graphing utility to draw the scatter diagram an.d graph the line of best fit on it. 1 11. 1 11 13 x -2 -1 0 2 9 11 Y -4 0 4 5 14. - 14 - 10 x -30 -27 -25 -20 -14 1 30 140 Y 10 12 13 13 18 Weight, x Calories, y Hershey's Milk Chocolate 44.28 230 Nestle's Crunch 44.84 230 Butterfinger 61.30 270 Baby Ruth 66.45 280 Almond Joy 47.33 220 Twix (with Caramel) 58.00 280 Snickers 61.12 280 Heath 39.52 210 Source: Megan Pocius, Student at Joliet Junior College (c) Select two points and find an equation of the line containing the points.* (d) Graph the line on the scatter diagram drawn in part (a). (e) Predict the number of calories in a candy bar that weighs 62.3 grams. (f) Interpret the slope of the line found in part (c).