1. Scatter Plots and Equations of Lines
Use the data in each table to draw a scatter plot. Describe the relationship between the two sets of data. 1 2 3 4 –3 8 9 5
–25 y x 1. 21 15 12 7 2.
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2. Scatter Plots and Equations of Lines
Solutions
1. Graph the points:  
(1, 2)
(2, –3)
(3, 8)
(4, 9)
(5, –25)
No Association. No consistent pattern between
the y-values and the x-values.
2. Graph the points:  
(1, 21)
(2, 15)
(3, 12)
(4, 9)
(5, 7)
Negative Association. The y-value decreases
as the x-value increases.
6-6