Interpreting 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 used to visualize trends over time.

Front

How do you determine the value of a data point on a line graph?

Back

To determine the value of a data point on a line graph, locate the point on the graph and read the corresponding value from the vertical (y-axis) and horizontal (x-axis) scales.

Front

What does the slope of a line in a line graph represent?

Back

The slope of a line in a line graph represents the rate of change between the two variables plotted on the axes. A steeper slope indicates a greater rate of change.

Front

What does it mean if a line graph is increasing?

Back

If a line graph is increasing, it means that the value of the variable on the y-axis is rising as the value of the variable on the x-axis increases.

Front

What does it mean if a line graph is decreasing?

Back

If a line graph is decreasing, it means that the value of the variable on the y-axis is falling as the value of the variable on the x-axis increases.

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 stable) and the pattern of the data points over time.

Front

What is the importance of the x-axis and y-axis in a line graph?

Back

The x-axis typically represents the independent variable (e.g., time), while the y-axis represents the dependent variable (e.g., quantity). Together, they provide context for the data being represented.

Front

How do you read the scale of a line graph?

Back

To read the scale of a line graph, examine the increments marked on the axes. Each increment represents a specific value, which helps in determining the exact value of data points.

Front

What does a flat line indicate in a line graph?

Back

A flat line in a line graph indicates that there is no change in the value of the variable on the y-axis as the variable on the x-axis changes.

Front

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

Back

To find the difference between two data points on a line graph, identify the values of the two points on the y-axis and subtract the smaller value from the larger value.