**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.

- The line graph shows the annual income of a person over a period of 7 years.

**Solved Example on Line Graph**

Irena recorded her test scores in a line graph as shown. What is Irena's score on the Math test?

Choices:A. 50

B. 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.

**Related Terms for Line Graph**

- Data Points
- Line Segment