Question

Luis's math teacher plots student grades on their weekly quizzes against the number

Answer 1

Answer:

In the graph, we have a linear fit of the student's grades as a function of the number of hours they say that they study.

Then the y-axis represents the grade, and the x-axis represents the number of hours of study, and because this is a linear fit, we will have something like:

y = a*x +b

If we input a value of x here (number of hours studied) we would get the expected grade for the weekly quiz y.

In this situation, the meaning of the x-value on the line when y = 75 would be the (adjusted) number of hours studied to get a grade of 75.

So this x-value is the average number of hours that a student needs to study to get a grade of 75 points.