Line Graph
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Definition of Line Graph
Line graph is a graph that uses line segments to connect data points and shows changes in data over time.
More About Line Graph

Multiple Line Graph: Multiple line graph is a line graph that shows changes in data over time for more than one category.
Video Examples: Learning About Line Graphs
Example of Line Graph

The line graph shows the annual income of a person over a period of 7 years
Solved Example on Line Graph
Ques: Irena recorded her test scores in a line graph as shown. What is Irena's score on the Math test?
Choices:
A. 50B. 80
C. 60
D. 40
Correct Answer: C
Solution:

Step 1: The height of each point in the line graph represents Irena's score on the particular test.
Step 2: Note the height of the point representing Irena's score on the Math test.
Step 3: The height of the point is 60.
Step 4: So, Irena scored 60 on the Math test.
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