Which term is defined as a graph that uses line segments to show changes that occur over time?

• A. Line plot
• B. Line graph
• C. Bar chart
• D. Tally chart

Answer: (B)

Line graphs use line segments to show changes that occur over time. By connecting data points with straight lines, you can see how a value rises, falls, or stays steady from one moment to the next, with time usually on the horizontal axis and the quantity on the vertical axis. This setup makes trends and the rate of change easy to spot. If you saw individual data points placed on a number line without connecting lines, that would be a line plot, which shows distribution rather than a continuous change over time. A bar chart compares different categories with separate bars, not a continuous progression over time. A tally chart is used for counting items and showing totals, not tracking changes over time.