4.3 Line Graphs

Front

What is a line graph?

Back

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 trends over time.

Front

What is the main purpose of a line graph?

Back

The main purpose of a line graph is to show trends over time.

Front

How do you read a line graph?

Back

To read a line graph, look at the x-axis (horizontal) for the independent variable and the y-axis (vertical) for the dependent variable. Follow the lines to see how values change.

Front

What does the x-axis represent in a line graph?

Back

The x-axis typically represents the independent variable, which is the variable that you change or control.

Front

What does the y-axis represent in a line graph?

Back

The y-axis typically represents the dependent variable, which is the variable that you measure or observe.

Front

How can you find the difference between two values on a line graph?

Back

To find the difference, locate the two points on the graph, read their values on the y-axis, and subtract the smaller value from the larger value.

Front

What is a data point in a line graph?

Back

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

Front

What does it mean if a line on a graph is going up?

Back

If a line on a graph is going up, it means that the dependent variable is increasing as the independent variable increases.

Front

What does it mean if a line on a graph is going down?

Back

If a line on a graph is going down, it means that the dependent variable is decreasing as the independent variable increases.

Front

What is the title of a graph?

Back

The title of a graph describes what the graph is about, summarizing the data being presented.