Final answer:
A line graph is a visual representation of a relationship between two variables that are changing. Graphing lines is a mathematical skill that is essential for understanding economics and economic relationships. It helps us visualize and analyze data, and can be used to solve real-life problems in various fields.
Step-by-step explanation:
A line graph is a visual representation of a relationship between two variables that are changing. It is often used to show patterns over time. Graphs can be misleading and should be viewed with caution, as they can alter how patterns are perceived. In economics, line graphs are commonly used to present continuous data about prices, wages, quantities bought and sold, and the size of the economy.
When graphing a line, the equation y = mx + b is commonly used, where x represents the horizontal axis variable and y represents the vertical axis variable. The slope (m) of the line indicates the relationship between the variables, while the y-intercept (b) represents the starting point of the line. The slope of a line is the same at any point on the line.
Graphing lines is a mathematical skill that is essential for understanding economics and economic relationships. It helps us visualize and analyze data, and can be used to solve real-life problems in various fields.