Test: Introduction To Graphs- 1 - Class 8 MCQ

A histogram is a bar graph that displays data in intervals.

• It is used to represent the distribution of a dataset.
• Each bar corresponds to a range of values.
• The height of each bar indicates the frequency of data points within that range.
• Histograms are particularly useful for visualising continuous data.

• To find the distance covered in 5 seconds:

  Assume a constant speed as shown in the image.
• Using the formula: Distance = Speed × Time.
  If speed is 5 m/s, then:
  Distance = 5 m/s × 5 s = 25 m.

As the graph is straight-line, we can observe that in each second, the distance covered is 5 metres. Thus we can conclude that in 7 seconds the distance covered will be 7 x 5 = 35 metres

The point is -2 units from x-coordinate and 3 units from y coordinate, hence the coordinates of the point is (-2,3).