Answer
Vertical line 2 units to the right of the y-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, $r \cos \theta =2 \implies x=2$
This shows a vertical line 2 units to the right of the y-axis.