Alang'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 does the slope of the line represent?


The slope of a linear graph or linear regression is the unit rate of the graph.
The slope of the line represents (c) A prediction of a student's quiz score if they spent 1 hour on their homework
From the graph, the y-axis represents the standard quiz score, while the x-axis represents the time (in hours).
So, the slope of the line is a measure of the y-axis over unit time (i.e. one hour).
Hence, the slope of the line represents (c)
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