Final answer:
To predict Justin's SAT score based on his GPA, use the equation of the trend line to determine the expected IQ and then use the other equation of the trend line to determine the predicted SAT score.
Step-by-step explanation:
To predict Justin's SAT score based on his GPA, use the following steps:
- Use the equation of the trend line to determine the IQ that is expected by the GPA.
- Use the other equation of the trend line to determine the SAT that is predicted by the IQ.
By following these steps, you can estimate Justin's SAT score based on his GPA.