Video Transcript
The graph shows the distance three
toy cars move each second. Which of the tables shows the
motion of the car represented by the orange crosses on the graph?
Here we have a graph which has
three sets of symbols, each representing one set of data on the graph. The question asked us to pick out
the data table for the points represented by the orange crosses. To do this, let’s start at the
origin. We see that the first orange cross
is at the origin, which corresponds to a time of zero seconds and a distance of zero
meters. However, all three data sets have a
point there, so we cannot use this point to differentiate between the sets.
Moving to the next orange cross, we
see that this lines up with one second on the horizontal axis and two meters on the
vertical axis. This matches the second entry on
the table in choice (B). To be absolutely certain we’ve got
the right table, we pick an easy point to read, such as the one circled. Here we can see the orange cross
clearly lines up with five seconds on the horizontal axis and 10 meters on the
vertical axis. This data point matches up with the
sixth entry in the data table in choice (B). And (B) must therefore be the
correct answer.
