Final answer:
The xx-value on a line of best fit represents the independent variable, x, in a given scenario. To find the corresponding x-value when the y-value is 12, we can use the equation of the line of best fit.
Step-by-step explanation:
The xx-value on a line of best fit represents the independent variable, x. In the given scenario, Justin is researching the relationship between the length in inches and the weight of a certain species of catfish. The length of the catfish would be the independent variable, x, while the weight would be the dependent variable, y.
When the y-value is 12, it means that the weight of the catfish is 12 units. To find the corresponding x-value (length) on the line of best fit, we can use the equation of the line with the given y-value. The xx-value on a line of best fit represents the independent variable, x, in a given scenario. To find the corresponding x-value when the y-value is 12, we can use the equation of the line of best fit.
Therefore, the meaning of the xx-value on the line when y is 12 is the length (in inches) of the catfish that corresponds to a weight of 12 units.