Exercise 5 Feedback

1.	$Slope \:of \:L=\frac{5-3}{-1-2}=-\frac{2}{3}$
2.	$Angle\:of\: inclination: \tan \theta =\frac{2}{3}\Rightarrow \theta =146.31^{\circ}$
3.	$Slope\:of\: parallel\: line = -\frac{2}{3}$
4.	$Slope\:of\: perpendicular\: line = -\frac{3}{2}$

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