Line Graphs

Front

What is a line graph?

Back

A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments. It is commonly used to visualize trends over time.

Front

How do you interpret the slope of a line in a line graph?

Back

The slope of a line in a line graph indicates the rate of change between the two variables represented on the axes. A positive slope means an increase, while a negative slope indicates a decrease.

Front

What does it mean if a line graph is increasing?

Back

An increasing line graph indicates that as one variable increases, the other variable also increases. This shows a positive correlation between the two variables.

Front

What does it mean if a line graph is decreasing?

Back

A decreasing line graph indicates that as one variable increases, the other variable decreases. This shows a negative correlation between the two variables.

Front

How can you determine the value of a variable at a specific point in time using a line graph?

Back

You can determine the value of a variable at a specific point in time by locating the corresponding point on the line graph and reading the value from the axis.

Front

What is the significance of the y-axis in a line graph?

Back

The y-axis in a line graph represents the dependent variable, which is the variable being measured or affected in relation to the independent variable on the x-axis.

Front

What is the significance of the x-axis in a line graph?

Back

The x-axis in a line graph represents the independent variable, which is the variable that is manipulated or changed to observe its effect on the dependent variable.

Front

How can you identify trends in a line graph?

Back

Trends in a line graph can be identified by observing the overall direction of the line (increasing, decreasing, or constant) and the shape of the line over time.

Front

What does a flat line in a line graph indicate?

Back

A flat line in a line graph indicates that there is no change in the dependent variable over the range of the independent variable being measured.

Front

How can you compare two different sets of data on the same line graph?

Back

You can compare two different sets of data on the same line graph by plotting them with different colored lines or markers, allowing for visual comparison of trends.