Question

After grading the most recent chapter test, a science teacher asks twelve of his 10th grade summer school students how long they studied for the test. Their answers, as well as their corresponding test grades, were recorded on a table and placed on the scatter plot below.
https://clackamasweb.owschools.com/media/g_mat08_ccss_2016/9/img_hours_studied_test_grade.gif



According to the equation for the line of best fit, y = 3.75x + 52.5, a student who spends zero hours studying for the test will most likely earn a corresponding grade of_____in the test.

A.56.25

B. 3.75

C. 52.5

Answer 1

In the graph is shown: x-axis is the hours that student spend studying for the test and y-axis is a grade obtained by student. The best fit equation is y=3.75x+52.5.
If student spend 0 hours, then x=0 and y=3.75*0+52,5=52.5. It is that the student most likely earn grade of 52.5 in the test.