What is a turning point in the context of polynomial graphs?

Convert the Cartesian coordinate \( (-4,6) \) to polar coordinates, \( 0 \leq \theta<2 \pi \). \( r=\square \) Enter an exact value. \( \theta=\square \)

Convert the Cartesian coordinate \( (-1,-5) \) to polar coordinates, \( 0 \leq \theta<2 \pi \) \( r=\square \) Enter exact value. \( \theta=\square \)

Convert the Cartesian coordinate \( (1,-2) \) to polar coordinates, \( 0 \leq \theta<2 \pi \) \( r=\square \) Enter exact value. \( \theta=\square \)

Rewrite the Cartesian equation \( x=6 \) as a polar equation. \( r(\theta)=\square \) Enter theta for \( \theta \) if needed.

Convert the Cartesian coordinate \( (1,5) \) to polar coordinates, \( 0 \leq \theta<2 \pi \) \( r=\square \) Enter exact value. \( \theta=\square \)