SOLUTION: https://ibb.co/gZcGwTZ The table below gives the number of hours spent studying for a math exam (x) and the exam grade (y). Using a line of best fit, predict the exam grade of a

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: https://ibb.co/gZcGwTZ The table below gives the number of hours spent studying for a math exam (x) and the exam grade (y). Using a line of best fit, predict the exam grade of a      Log On


   

Question 1206258: https://ibb.co/gZcGwTZ
The table below gives the number of hours spent studying for a math exam (x) and the exam grade (y). Using a line of best fit, predict the exam grade of a student who studied 5 hours.
a) 100
b) 96
c) 93
d) 87
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

Answer: 96

Explanation

There are many calculators that will compute the regression line. I used GeoGebra to do so.
Let me know which calculator you are using and if you have questions on how to find the line of best fit.

You should find that the regression line is roughly:
y = 8.7x + 52.267

Then plug in x = 5
y = 8.7x + 52.267
y = 8.7*5 + 52.267
y = 95.767
y = 96