Answer
It is a right triangle.
Work Step by Step
To be a right triangle, one set of slopes must be opposite reciprocals, for this would make two of the lines perpendicular. Thus:
$m_1 = \frac{y_2-y_1}{x_2-x_1} = \frac{5-0}{6-(-3)} = 5/9$
$m_2 = \frac{y_2-y_1}{x_2-x_1} = \frac{5-(-2)}{6-4} =7/2 $
$m_3 = \frac{y_2-y_1}{x_2-x_1} = \frac{-2-0}{4-(-3)} = -2/7 $
Since slopes two and three are opposite reciprocals, it is a right triangle.
