Answer
Two other polar coordinate representations of this point: $ (-2, \frac{7\pi}{4})$ and $ (2, \frac{11\pi}{4})$
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Work Step by Step
1. Plot the point.
$3\pi/4$ is exactly in the middle of the second quadrant, draw a line with that angle that measures 2 units.
2. Another polar coordinate representation can be given by:
$$(-r,\theta + \pi) = (- 2, \frac{3\pi}4 + \pi) = (-2, \frac{7\pi}{4})$$ or
$$(r, \theta + 2\pi) = (2 , \frac{3\pi}{4} + 2\pi) = (2, \frac{11\pi}4)$$
