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What does a line graph typically show?

  1. Static information

  2. Trends over a period of time

  3. Discrete quantities

  4. Comparative parts of a whole

The correct answer is: Trends over a period of time

A line graph is specifically designed to display trends over a period of time by illustrating how one variable changes in relation to another, typically plotted along the x-axis and y-axis. This makes it particularly useful for identifying patterns, increases, decreases, and fluctuations in data, allowing for easy visual interpretation of trends. For example, in a line graph tracking temperature changes over months, each point on the graph represents a temperature reading at a specific time, and connecting these points reveals the overall trend in temperature changes throughout the year. This capability to represent continuous data along a timeline distinguishes line graphs from other types of graphs, which may focus on static data, discrete quantities, or parts of a whole.