Look at the y-axis. This is time 0, the beginning of the race.
Stuart starts at 60 yards from the finish.
Peter starts at 100 yards from the finish.
Stuart runs 60 yards, and Peter runs 100 yards.
Also, now look at the x-axis.
Stuart take 13 seconds to complete the race, and Peter takes 12 seconds to complete the race.
a.
Stuart ran 60 yards in 13 sec.
Peter ran 100 yards in 12 sec.
Peter ran a longer distance in less time, so Peter runs at a faster rate.
b.
Stuart ran 60 yd. Peter ran 100 yd.
100 yd - 60 yd = 40 yd.
They both started at the same time, so Stuart had a 40 yd head start.
Stuart still lost the race.
c.
Peter does not have a head start. He must run 40 extra yards.
d.
Stuart runs 60 yd.
Peter runs 100 yd.
Peter runs the longer race.
e.
Stuart finishes in 13 sec.
Peter finishes in 12 sec.
Stuart does take 1 more second than Peter.
f.
Peter ran 100 yd in 12 sec.
Speed = distance/time = (100 yd)(12 sec) = 8.33 yd/sec
Every statement is explained above.
Now you need to decide which ones are true and which ones are false based on the explanations.