Answer
A horizontal line 1 unit below the x-axis.
Work Step by Step
Conversion of polar coordinates and Cartesian coordinates are as follows:
a)$r^2=x^2+y^2 \implies r=\sqrt {x^2+y^2}$
b) $\tan \theta =\dfrac{y}{x} \implies \theta =\tan^{-1} (\dfrac{y}{x})$
c) $x=r \cos \theta$
d) $y=r \sin \theta$
In our given problem $r \sin \theta =-1 \implies y=-1$
This shows a horizontal line 1 unit below the x-axis.
