Graph the Polar Equations of Conics
- $r = \frac { 2 } { 2 - \cos \theta } \quad$

question 157

Multiple Choice

Graph the Polar Equations of Conics
- $r = \frac { 2 } { 2 - \cos \theta } \quad$ Identify the directrix and vertices.

• A) directrix: 2 unit(s) to the left of the pole at \(x = - 2\) vertices: \(\left( \frac { 2 } { 3 } , \pi \right) , ( 2,0 )\)
• B) directrix: 2 unit(s) to the right of the pole at \(x = 2\) vertices: \(\left( - \frac { 2 } { 3 } , \pi \right) , ( 2 , \pi )\)
• C) directrix: 2 unit(s) below the pole at \(\mathrm { y } = - 2\) vertices: \(\left( - \frac { 2 } { 3 } , \frac { \pi } { 2 } \right) , \left( 2 , \frac { \pi } { 2 } \right)\)
• D) directrix: 2 unit(s) above the pole at \(\mathrm { y } = 2\) vertices: \(\left( \frac { 2 } { 3 } , \frac { \pi } { 2 } \right) , \left( - 2 , \frac { \pi } { 2 } \right)\)

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Definitions:

Celiac Trunk

A major artery that supplies blood to the stomach, spleen, liver, and other parts of the abdomen.

Lumen

The internal space or cavity of a tubular structure, such as a blood vessel or the intestine.

Tunica Adventitia

The tunica adventitia is the outermost layer of a blood vessel, consisting of connective tissue, that provides structural support and protection.

External Elastic Lamina

The outermost layer of elastic tissue found in the walls of arteries, contributing to the elasticity and strength of the blood vessels.