9.1 Review

Convert the polar coordinates to rectangular form  $\left(\sqrt{2},\ -\frac{\pi}{4}\right)$  

• (1, 1)

• (1, -1) 

• (-1, 0)

• (-1, -1)

Covert the rectangular equation to polar form  $x^2+y^2=9$  

• r² = 81

• r = 3

• r = 4.5

• r sin θ = 9

Which point represents (3, 3π/4)

• F
• E
• B
• A

Which point represents the polar coordinate
(-4, -2π/3)

• B
• F
• D
• A

Which point represents (5, π)

• F
• E
• B
• A

Convert the rectangular coordinates to polar form  $\left(\sqrt{8},\ \sqrt{8}\right)$  

• (√2 , 7π/4)

• (2 , 3π/4)

• (4 , π/4)

• (4 , 5π/4)

Convert the rectangular coordinates to polar form  $\left(-\sqrt{6},\ -\sqrt{2}\right)$  

• (√8 , 7π/6)

• (4 , 3π/4)

• (√8 , π/6)

• (8 , 7π/6)

Convert the polar coordinates to rectangular form  $\left(\sqrt{2},\ -\frac{\pi}{4}\right)$  

• (1, 1)

• (1, -1) 

• (-1, 0)

• (-1, -1)

Convert the polar coordinates to rectangular form  $\left(6,\ \frac{2\pi}{3}\right)$  

• ( -3, 3)

• (3, 3√3)

• (-3, 3√3)

• (3, -3√3)

Covert the rectangular equation to polar form  $y=x^2$  

• r = cot θ csc θ

• r = tan θ csc θ

• r = tan θ sec θ

• r = 0