How do you correctly interpret and construct a line graph and bar graph?

To correctly interpret a line graph, focus on the axes, which typically represent two variables, and observe how the line connects data points to show trends over time. For a bar graph, examine the height of each bar, which represents the value of a category, and compare these heights to analyze differences among the categories. Ensure you check the scale and labels on both graphs for clarity and context. When constructing these graphs, accurately plot data points for line graphs or draw bars for categorical data in bar graphs, maintaining consistent scales for easy comparison.