A tie occurs where all swim lines intersect, indicating simultaneous distance coverage, and reflecting an equal race position for all swimmers.
To determine when all three swimmers were tied in the 200-yard freestyle race, I'd examine the graph, focusing on the point where all three lines intersect or share the same y-coordinate.
If there's a single point where the lines representing each swimmer (Rebecca - dashes, Barbara - dots, Genelle - solid) meet or have the same y-coordinate, it indicates the moment when they were all tied.
Identifying this point entails finding where the lines converge on the graph, signifying an equal distance covered by each swimmer at that specific time. At this intersection, the y-coordinate would represent the distance covered by all three swimmers simultaneously.
Upon visual inspection of the graph, pinpointing the specific moment when all three lines coincide horizontally would signify the time when Rebecca, Barbara, and Genelle were tied in the race. This alignment represents the instance where they covered an identical distance, demonstrating a tie in the race.
However, without the visual representation of the graph, it's challenging to precisely ascertain the time when all three swimmers were tied. Analyzing the graph for a point where all lines intersect horizontally would denote the moment of the tie in the race.