Geo 10-8

10-8 Standard Form Equation of a Circle

Multiple Choice

What is the coordinates of the center and the radius of the circle with equation:

(x - a)² + (y - b)² = r² ?

• Centre (a,b) Radius = r^2 units

• Centre (-a,-b) Radius = r units

• Centre (a,b) Radius = r units

• Centre (-a,-b) Radius = r^2 units

Multiple Choice

peter pan went to...

• alwaysland

• foreverland

• disneyland

• neverland

Multiple Choice

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

• (3,2)

• (-3, -2)

• (-2, -3)

• (2, 3)

Multiple Choice

Which graph corresponds to

(x-4)²+ (y+4)²=25

• A

• B

• C

• D

Multiple Choice

What is the value of DC? (to the nearest hundredth) 

• 9.43

• 4.43

• √89

• 9

Multiple Choice

The four houses at Hogwarts are Gryffindor, Slytherin, Hufflepuff, and 

• Ravenclaw

• Hogsmeade

• Basilisk 

Multiple Choice

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

• 4

• 2

• 3

• 16

Multiple Choice

Which graph corresponds to 
(x)²+ (y-6)²=9

• A

• B

• C

• D

Multiple Choice

The diameter of a circle has length 12. The center is at (-5, 2). Give the equation of the circle.

• (x - 2)² + (y + 5)² = 36

• (x - 5)² + (y + 2)² = 6

• (x + 5)² + (y - 2)² = 36

• (x + 2)² + (y - 5)² = 6

Multiple Choice

Which house is Harry Potter a member of?

• Hufflepuff

• Griffindor

• Slytherin

• Ravenclaw

Multiple Choice

What is the equation of the circle?

• (x+1)² + (y +1)² = 3

• (x+1)² + (y -1)² = 3

• (x+1)² + (y +1)² = 9

• (x-1)² + (y -1)² = 9