Final answer:
To find the trend line equation, analyze the graph and identify the slope and y-intercept. Use the equation of a straight line, y = mx + b, where m is the slope and b is the y-intercept. By calculating these values, you can determine the trend line equation.
Step-by-step explanation:
A trend line equation represents the relationship between two variables on a graph. To find the trend line equation, you need to use the equation of a straight line, which takes the form y = mx + b, where m is the slope of the line and b is the y-intercept. The slope represents how much the dependent variable changes for every unit change in the independent variable, while the y-intercept represents the value of the dependent variable when the independent variable is 0. By analyzing the graph and identifying two points on the line, you can calculate the slope and y-intercept to determine the trend line equation.
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