Replace the Polar Equation with an Equivalent Cartesian Equation $8 r \cos \theta + 9 r \sin \theta = 1$

Multiple Choice

Replace the polar equation with an equivalent Cartesian equation.
- $8 r \cos \theta + 9 r \sin \theta = 1$

A) $8 x + 9 y = x ^ { 2 } + y ^ { 2 }$
B) $\frac { x } { 8 } + \frac { y } { 9 } = 1$
C) $8 y + 9 x = 1$
D) $8 x + 9 y = 1$