Try another version of this question
Rewrite the polar equation r=-6cos(θ) as a Cartesian equation.
Draw the graph below.
Clear All Draw: 









Get help:
Box 1: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Be sure your variables match those in the question
(x+3)2+y2=9
Box 2: Enter your answer by drawing on the graph.