Line Graphs

A line graph is a type of chart that shows information as a series of data points called 'markers' connected by straight line segments. It is used to display data that changes over time.

A line graph typically shows how a quantity changes over time.

The x-axis is the horizontal line on a graph that usually represents time or categories.

The y-axis is the vertical line on a graph that usually represents the quantity or value being measured.

To read a line graph, look at the x-axis to find the time or category, then move up or down to see the corresponding value on the y-axis.

A flat line on a graph means that the value is constant and does not change over the time period shown.

An upward slope indicates that the value is increasing over time.

A downward slope indicates that the value is decreasing over time.

The title of a line graph explains what the graph is about and what data is being represented.

A data point is a specific value plotted on the graph, representing the quantity at a specific time.