# Line Graph

The data which changes over a period of time can be displayed through a line graph.

In line graph:

Points are plotted on the graph related to two variables

Points are joined by the line segments.

How to Construct a Line Graph?

Steps of construction of line graph:

On a graph, draw two lines perpendicular to each other intersecting at O. The horizontal line is x-axis and vertical line is y-axis. Mark points at equal intervals along x-axis and write the names of the data items whose values are to be marked.

Along the y-axis, choose an appropriate scale considering the given values.

Now, make the points

Join each point with the successive point using a ruler. Thus, a line graph is obtained

Solve Examples on Line Graph:

1. The following table gives the information of the sum scored by McKay in 10 matches. Represent this information using line graph.

 Match 1 2 3 4 5 6 7 8 9 10 Runs Scored 80 30 50 90 40 60 75 20 15 90

2. Mobile phones sold by a shop in a certain week are as follows:

 Days Mon. Tues. Wed. Thurs. Fri. Sat. No. of Mobile Phones Sold 20 16 12 24 4 10

Represent the above data by a line graph.

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