The slope of the best fit regression line can be found using the formula .

The y-intercept of the best fit regression line can be found using the formula .

Sum up the values of the first column of data .

Simplify the expression.

Sum up the values of the second column of data .

Simplify the expression.

Sum up the values of .

Simplify the expression.

Sum up the values of .

Simplify the expression.

Sum up the values of .

Simplify the expression.

Fill in the computed values.

Simplify the expression.

Fill in the computed values.

Simplify the expression.

Fill in the values of slope and y-intercept into the slope-intercept formula.

Find the Regression Line table[[x,y],[11.6,13.7],[8.4,10.5],[6.3,11.2],[3.4,10.9],[2.1,5.4],[2.9,6.6],[2.7,3.6],[0.9,4.6]]