Unit 11 Test 2

Write the equation of a circle with center (7, 0) with radius 3. 

• (x - 7)² + y² = 9
• x² + (y -7)² = 9
• (x - 7)² + y² = 3
• x² + (y -7)² = 3

In the equation (x+2)²+(y-3)²=4, the radius of the circle is...

• 4
• 2
• 3
• 16

In the equation (x-3)²+(y-2)²=16, the center of the circle is...

• (3,2)
• (-3, -2)
• (-2, -3)
• (2, 3)

What is the equation for this circle?

• (x+1)+(y+1)=9
• x²+y²=9
• x+y=9

What is the diameter?

• 8
• 16
• 10
• 4

What is the radius?

• 18
• 72
• 38
• 14

Convert 150⁰ to radians

• 5π/6
• 3π/4
• 7π/6
• 2π/3

Convert 100⁰ to radians

• 5π/9
• π/2
• 5π/8
• 5π/6

What is 7π/4 radians in degrees?

• 300
• 135
• 315
• 45

What is 225  degrees in radians? 

• 7π/4
• 5π/4
• 3π/4
• 5π/3