![~~~~~~~~~~~~\textit{distance between 2 points} \\\\ B(\stackrel{x_1}{-1}~,~\stackrel{y_1}{-1})\qquad A(\stackrel{x_2}{3}~,~\stackrel{y_2}{1})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ BA=\sqrt{[3 - (-1)]^2 + [1 - (-1)]^2}\implies BA=\sqrt{(3+1)^2+(1+1)^2} \\\\\\ BA=\sqrt{4^2+2^2}\implies BA=\sqrt{20}\implies BA\approx 4.5](/tpl/images/2666/8176/13cda.png)
The distance AB=? Round to the nearest tenth.
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