The item labeled 3 is an example of what part of a graph? A graph with the following seven labeled parts. Part 1. The horizontal axis, which extends from 0 to 7. Part 2. The vertical axis, which extends from 0 to 50. Part 3. A tick mark on the vertical axis, representing the value 42. Part 4. The horizontal axis label of Time, in seconds, and the vertical axis label of Distance, in meters. Part 5. The words Observed Car Motion, found at the top of the graph. Part 6. Two of eight points plotted, all of which lie close to a drawn line segment. Part 7. A line segment with left endpoint begin ordered pair 0 comma 0 end ordered pair and right endpoint begin ordered pair 7 comma 49 end ordered pair. Eight points lie on or close to this line segment. independent variable trend line tick mark data point