Which rectangular equation is equivalent to the polar equation r sin theta=-2

To convert polar equations in the form of r∠∅ to rectangular coordinates in terms of x, y and r, the formulas are as follows:

r2 = x2 + y2

x = rcos∅

y = rsin∅

Since the equation is rsin∅=y, then rsin∅=-2 is equivalent to y=-2.