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.

The x-axis (horizontal axis) typically represents the independent variable, which is the variable that is changed or controlled in an experiment.

The y-axis (vertical axis) usually represents the dependent variable, which is the variable that is measured or affected in an experiment.

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.

If a line on a graph is going up, it means that the value of the dependent variable is increasing over time.

If a line on a graph is going down, it means that the value of the dependent variable is decreasing over time.

A flat line on a graph indicates that the value of the dependent variable is staying the same over time.

To find the total amount from a line graph, you can add the values of the data points together.

The title of a line graph explains what the graph is about, providing context for the data being presented.

A data point is a specific value plotted on the graph, representing the relationship between the independent and dependent variables.