Four graphs are shown below: scatter plot a is shown with data points that move in an upward direction and are located at 1 and 0.3, 2 and 1, 3 and 2, 4.1 and 4, 5.2 and 6.1, 5.9 and 9.5. additional points are located at 4.6 and 5, 5.8 and 7.4, 5.2 and 7.1. scatter plot b shown with data points that move in an upward direction and are located at 0 and 2, 1 and 3, 2 and 4, 3 and 5, 4 and 6, 5 and 7, 6, and 8, 7 and 9. scatter plot c shown with data points that move in a downward direction and are located at 0.1 and 8.7, 4 and 5.6, 5 and 4.3, and 6 and 0.5. additional points are located at 5.9 and 1.5, 5.5 and 3.5. scatter plot d is shown with points that move in a downward direction and are located at 0 and 7, 1 and 6, 2, and 5, 3 and 4, 4 and 3, 5 and 2, 6, and 1. which graph represents a positive linear association between x and y? graph a graph b graph c graph d