Question

sophie’s math teacher plots student grades on their weekly quizzes against the number of hours they say they study on the pair of coordinate axes and then draws the line of best fit. what is the meaning of the y-value on the line when ( x = 1 )?

Explanation:

The line of best fit is used to predict values. When \( x = 1 \) (1 hour of study), the \( y \)-value on the line of best fit is a prediction (not the actual value, as actual values are the data points) of a student's quiz score if they spend 1 hour on their homework. So we eliminate options about "actual" scores. Also, \( x = 1 \) means 1 hour, not 0.5 hours. So the correct interpretation is a prediction of a student's quiz score if they spend 1 hour on their homework.

Answer:

A prediction of a student's quiz score if they spend 1 hour on their homework.