Describe the distance time graphs below

Distance Time GraphsA visual aid for a teacher to use in a Mathematics lesson showing distance time graphs.Class discussion might illuminate the fact that the steepness or gradient of the line graph is related to the speed of the vehicle. A positive gradient indicates a velocity away from the reference point while a negative gradient represents a velocity in the opposite direction. A gradient of zero represents the vehicle coming to rest. In the real world a more accurate graph of the situation would be a smooth curve rather than a number of straight lines. After viewing the graphs above have a look at the Hurdles Race for some fun. Finally here is the multilevel Travel Graphs interactive set of exercises. 

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