Answer
A line with slope $2$ and intercept is $5$.
Work Step by Step
The conversion of polar coordinates and Cartesian coordinates are described as follows:
1. $r^2=x^2+y^2$ and $r=\sqrt {x^2+y^2}$
2. $\tan \theta =\dfrac{y}{x} \implies \theta =\tan^{-1} (\dfrac{y}{x})$
3. $x=r \cos \theta$ and 4. $y=r \sin \theta$
As we know that $x=r \cos \theta$ and $y=r \sin \theta$
Multiply both sides by $\sin \theta -2 \cos \theta $
Now,we have $r\sin \theta -2r \cos \theta=5$
Thus, the Cartesian equation is $y-2x=5$
or, $y=2x+5$
Thus, this shows a line with slope $2$ and intercept is $5$.