Playing video games makes Matt so happy that he thinks it even helps him complete more schoolwork. Matt's roommate Gabriel is skeptical, so over the next few days, Gabriel asks Matt about his progress on his daily reading. For each day, Gabriel notes the number of minutes Matt spends playing video games, x. He also takes the number of pages Matt reads and divides it by the total number of pages assigned, y.
The least squares regression line of this data set is:
Y = -0.355x + 69.402
Complete the following sentence:
If Matt spends an additional minute playing video games, the least squares regression line predicts his completion percentage drops by points.
What goes into the blank?