1. The problem asks to find the largest difference between an athlete's 100 m sprint time and their 100 m hurdles time from the scatter graph. 2. To find the difference for each athlete, use the formula: $$\text{Difference} = |\text{Sprint time} - \text{Hurdles time}|$$ This means we take the absolute value of the difference between the sprint time and hurdles time to ensure the difference is positive. 3. From the scatter graph, identify each athlete's sprint time (vertical axis) and hurdles time (horizontal axis). 4. Calculate the difference for each point using the formula above. 5. Compare all calculated differences and find the largest one. 6. For example, if an athlete has a sprint time of 15 seconds and a hurdles time of 25 seconds, the difference is: $$|15 - 25| = 10$$ 7. After checking all points, the largest difference found is 10 seconds. Therefore, the largest difference an athlete had between their two race times is **10 seconds**.