The graphs display velocity data. Velocity is on the y-axis (m/s), while time is on the x-axis (s). Based on the graphs, which data set represents constant acceleration? Untitled and unlabeled graph with x axis numbered 0 to 4 and the y axis numbered from 0 to 5. There is a line connecting square points of (0, 0), (1, 1), (2, 2), (3, 3) and (4, 4). Untitled and unlabeled graph with x axis numbered 0 to 4 and the y axis numbered from 0 to 12. There is a line connecting square points of (0,0), (1,.5), (2,2.5), (3,6) and (4,10). Untitled and unlabeled graph with x axis numbered 0 to 4 and the y axis numbered from 0 to 6. There is a line connecting square points of (0, 5), (1, 5), (2, 5), (3, 5) and (4, 5).