How do you convert y^2= 4(x+1) into polar form? Precalculus Polar Coordinates Converting Equations from Polar to Rectangular 1 Answer Bdub Sep 11, 2017 see below Explanation: Use the formulas x=rcos theta, y=r sin theta y^2 = 4(x+1) r^2sin^2 theta=4(rcos theta+1) r^2 sin^2 theta=4rcos theta+4 :.r^2 sin^2 theta-4rcos theta-4=0 Answer link Related questions What is the polar equation of a horizontal line? What is the polar equation for x^2+y^2=9? How do I graph a polar equation? How do I find the polar equation for y = 5? What is a polar equation? How do I find the polar equation for x^2+y^2=7y? How do I convert the polar equation r=10 to its Cartesian equivalent? How do I convert the polar equation r=10 sin theta to its Cartesian equivalent? How do you convert polar equations to rectangular equations? How do you convert r=6cosθ into a cartesian equation? See all questions in Converting Equations from Polar to Rectangular Impact of this question 4217 views around the world You can reuse this answer Creative Commons License