Fill in the table below (last row is for sums)

$\displaystyle {x}$	$\displaystyle {y}$	$\displaystyle {x}^{{2}}$	$\displaystyle {y}^{{2}}$	$\displaystyle {x}{y}$
5	-5
6	-7
7	-8

(last row of table is for sums)

Calculate the following by hand:

$\displaystyle {r}=$

Regression Equation:

$\displaystyle {y}=$$\displaystyle {x}+$