Find the Regression Line table[[c,y],[15,120],[45,60],[75,30],[105,15],[135,7.5],[165,3.75],[195,1.875],[225,0.9375],[255,0.46875],[285,0.234375]]

Math
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[[c,y],[15,120],[45,60],[75,30],[105,15],[135,7.5],[165,3.75],[195,1.875],[225,0.9375],[255,0.46875],[285,0.234375]]

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