Question

a teacher takes the semester exam scores for the first semester of a course and designs a line of best fit to predict the semester exam scores for the second semester, y, based on the number of days of attendance, x. her equation for the line of best fit is y = 0.7x + 37. select the test score that the teacher should expect from a student who did not attend her course.
a 44
b 0.7
c 4.4
d 37

Explanation:

Step1: Substitute \(x = 0\) into the equation

The equation of the line of best fit is \(y=0.7x + 37\). When a student does not attend (\(x = 0\)), we substitute \(x\) into the equation.

$$y=0.7\times0+37$$

Step2: Calculate the value of \(y\)

$$y = 0+37=37$$

Answer:

D. 37