Scatter Plots Laura went to a golf shop that has a golf simulator. The simulator estimates the distance that each ball she hits would have gone. She hit five balls each with her 2, 3, 4, 5, 6, 7, 8, and 9 irons. The distances of her golf shots are given in the table. Keep this table window open as you work on the tasks in this activity.

When Laura graphed the data, she got this scatter plot and drew a line of best fit. Keep the scatter plot window open as you work on the tasks in this activity.

When her brother graphed the data, he got a different scatter plot and drew a line of best fit. Keep the scatter plot window open as you work on the tasks in this activity.

Part A
Whose scatter plot matches the data, and what is wrong with the incorrect scatter plot?

Part B
Using the correct graph, describe the association shown.

Part C
What is the slope of the line in the correct graph? What is the slope of the line in the incorrect graph? Are the slopes the same or different?

Part D
What is the y-intercept of the correct graph? What is the y-intercept of the incorrect graph? Are the y-intercepts the same?

Part E
If Laura were able to find a 0 iron, about how far could she hit it?

Part F
About what is the average change in distance for each increase of 1 in the iron number? What does this mean in terms of the situation?

The Table

Iron Distance Iron Distance Iron Distance
2 179 5 150 8 119
2 169 5 147 8 115
2 173 5 148 8 112
2 175 5 140 8 117
2 180 5 143 8 116
3 158 6 136 9 105
3 169 6 140 9 108
3 165 6 135 9 100
3 162 6 131 9 101
3 165 6 133 9 103
4 153 7 128
4 158 7 124
4 153 7 120
4 160 7 122
4 150 7 125